CN112133224A - Marketing planning device - Google Patents

Marketing planning device Download PDF

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Publication number
CN112133224A
CN112133224A CN202011029384.1A CN202011029384A CN112133224A CN 112133224 A CN112133224 A CN 112133224A CN 202011029384 A CN202011029384 A CN 202011029384A CN 112133224 A CN112133224 A CN 112133224A
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CN
China
Prior art keywords
plate
box
buckles
publicity board
shielding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011029384.1A
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Chinese (zh)
Inventor
王璐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Institute of Economic and Trade Technology
Original Assignee
Jiangsu Institute of Economic and Trade Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Institute of Economic and Trade Technology filed Critical Jiangsu Institute of Economic and Trade Technology
Priority to CN202011029384.1A priority Critical patent/CN112133224A/en
Publication of CN112133224A publication Critical patent/CN112133224A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F15/00Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
    • G09F15/0006Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like planar structures comprising one or more panels
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F15/00Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
    • G09F15/0068Modular articulated structures, e.g. stands, and articulation means therefor
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F15/00Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
    • G09F15/0087Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like including movable parts, e.g. movable by the wind

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Tents Or Canopies (AREA)

Abstract

The invention discloses a marketing planning device, which comprises two bottom plates, wherein two universal wheels are connected to two sides of the lower ends of the two bottom plates, lifting devices are connected to the top ends of the bottom plates, a locking box is connected between the lower parts of opposite surfaces of the two lifting devices, a publicity board is connected between the upper parts of the opposite surfaces of the two lifting devices, a cover plate is movably connected to the top ends of the publicity board, an observation window is installed at one end of the publicity board, connecting blocks are connected to the top ends of the lifting devices, and a shielding device is clamped between the top ends of the two connecting blocks. The solar advertising board has the advantages that the operation is simple and convenient, strong sunlight and rainwater can be shielded through the arranged shielding device, the influence on personnel to watch advertising contents is avoided, the shielding angle can be adjusted, the practicability of the device is higher, the lifting device can be convenient for people with different heights to watch the advertising board, and the flexibility of the device is higher.

Description

Marketing planning device
Technical Field
The invention relates to the technical field of marketing plans, in particular to a marketing plan device.
Background
Marketing planning ways mainly include promotion, publicity, exhibition, etc., so as to improve the popularity of products or enterprises, increase the sales volume of products, and a marketing planning device is often needed in the marketing process, the structure of the currently used marketing planning device is too simple, when the device is used outdoors, the device is not convenient for shielding rainwater or sun and adjusting the angle when shielding, so that the practicability of the whole device is not high, and the publicity board in these devices is inconvenient for adjusting the height position, so that the content in the publicity board is inconvenient for people with different heights to watch, the flexibility of the whole device is reduced, the devices are inconvenient to disassemble, so that the whole device is inconvenient to carry, and the devices are easy to slide in the working process, so that the stability of the whole apparatus is not high, and for this reason, we propose a marketing planning apparatus for solving the above problems.
Disclosure of Invention
The present invention is directed to a marketing planning apparatus to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme: a marketing planning device comprises two bottom plates, wherein two universal wheels are connected to two sides of the lower ends of the two bottom plates, lifting devices are connected to the top ends of the bottom plates, a locking box is connected between the lower portions of opposite surfaces of the two lifting devices, a publicity board is connected between the upper portions of the opposite surfaces of the two lifting devices, a cover plate is movably connected to the top end of the publicity board, an observation window is installed at one end of the publicity board, connecting blocks are connected to the top ends of the lifting devices, and shielding devices are clamped to the top ends of the two connecting blocks together;
the shielding device comprises a fixing plate, movable grooves are formed in the two ends of the fixing plate, a pull rod is connected to the top end of the fixing plate in an inserting mode, the lower end of the pull rod extends to the inside of the fixing plate and is connected with a supporting plate, the two ends of the supporting plate are connected with an rotating shaft, two shielding plates are connected to the ends, far away from the supporting plate, of the rotating shaft, one ends of the two shielding plates respectively penetrate through the two movable grooves, the lower end of the fixing plate is connected with two first buckles, the top end of the fixing plate is connected with two second buckles, first clamping grooves used by the two first buckles in a matched mode are formed in the lower plate wall of the fixing plate, and second clamping grooves used by the two second buckles in a matched.
As a preferred technical scheme of the invention, both sides of the lower end of the fixed plate are connected with mounting frames, the lower ends of the mounting frames are connected with mounting buckles, and the top ends of the connecting blocks are provided with mounting grooves matched with the mounting buckles for use.
As a preferred technical scheme of the invention, the lifting device comprises a driving box, the lower end of the driving box is fixedly connected with the bottom plate, the top end of the driving box is connected with a vertical rod, one end of the vertical rod is provided with a moving groove, a driving motor is arranged in the driving box, the output end of the driving motor is connected with a threaded rod, one end of the threaded rod penetrates through the vertical rod and is rotatably connected with the upper inner wall of the vertical rod, the outer surface of the threaded rod is sleeved with a moving block, one end of the moving block penetrates through the moving groove and is connected with a support frame, and the top end of the support frame is provided with a connecting.
As a preferred technical scheme of the invention, the stop box comprises a box body, the top end of the box body is movably connected with a box plate, two ends of the box body are both connected with two fixing buckles, the upper box wall of the box body is connected with an air cylinder, the lower end of the air cylinder is sleeved with a piston rod, the lower end of the piston rod is connected with a friction plate, and the lower end of the friction plate is provided with a plurality of bulges.
As a preferable technical scheme of the invention, one end of the driving box is provided with two fixing grooves matched with the fixing buckles for use, and the vertical section size of the driving box is the same as that of the box body.
As a preferred technical scheme of the invention, both sides of the lower end of the publicity board are connected with connecting buckles matched with the connecting grooves.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the shielding device, the fixed plate and the two shielding plates can conveniently shield the whole device, so that strong sunlight or rainwater is prevented from influencing the watching of people on propaganda contents, and the shielding angles of the two shielding plates can be adjusted under the action of the pull rod, the rotating shaft and the supporting plate, so that the shielding effect of the shielding device is better, and the practicability of the whole device is improved.
2. Through setting up elevating gear, under the effect of driving motor, threaded rod and movable block wherein, can make the publicity board can carry out the adjustment of high position for the people of different heights of being convenient for of the content in the publicity board are watched, have improved the flexibility of whole device.
3. Through setting up connecting block and installation knot, spread groove and connector link and fixed knot and fixed slot, can make whole device dismantle, the staff of being convenient for carries whole device, simultaneously under cylinder, piston rod, friction plate and protruding effect, can make the device be difficult for appearing gliding condition in the course of the work, improved the stability of whole device.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view and a cross-sectional view of a shielding device according to the present invention;
FIG. 3 is a schematic view of the lifting device and a cross-sectional view of the driving box and the vertical rod of the present invention;
FIG. 4 is a schematic and sectional view of a stopper box of the present invention.
In the figure: 1. a base plate; 2. a shielding device; 3. a lifting device; 4. a stopper box; 5. a universal wheel; 6. an observation window; 7. a publicity board; 8. a cover plate; 9. connecting blocks; 21. a fixing plate; 22. a pull rod; 24. a mounting frame; 25. installing a buckle; 26. a movable groove; 211. a support plate; 212. a first buckle; 213. a rotating shaft; 214. a shielding plate; 215. a second buckle; 31. a drive box; 32. connecting grooves; 33. a support frame; 34. a moving groove; 35. a vertical rod; 36. a moving block; 37. a threaded rod; 38. a drive motor; 41. a box body; 42. a boxboard; 43. a cylinder; 44. a protrusion; 45. a friction plate; 46. a piston rod; 48. and (5) fixing the buckle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a marketing planning device comprises base plates 1, wherein two base plates 1 are arranged, universal wheels 5 are connected to two sides of the lower ends of the two base plates 1, lifting devices 3 are connected to the top ends of the base plates 1, a locking box 4 is connected between the lower portions of opposite surfaces of the two lifting devices 3, a publicity board 7 is connected between the upper portions of the opposite surfaces of the two lifting devices 3, a cover plate 8 is movably connected to the top end of the publicity board 7, an observation window 6 is installed at one end of the publicity board 7, connecting blocks 9 are connected to the top ends of the lifting devices 3, a shielding device 2 is clamped to the top ends of the connecting blocks 9 together, the shielding device 2 comprises a fixing plate 21, movable grooves 26 are formed in two ends of the fixing plate 21, pull rods 22 are connected to the top ends of the fixing plate 21 in an inserting mode, and the lower ends of the pull rods 22 extend, the two ends of the supporting plate 211 are both connected with rotating shafts 213, one ends of the two rotating shafts 213 far away from the supporting plate 211 are both connected with shielding plates 214, one ends of the two shielding plates 214 respectively penetrate through the two movable grooves 26, the lower end of the fixing plate 21 is connected with two first buckles 212, the top end of the fixing plate 21 is connected with two second buckles 215, the lower plate wall of the fixing plate 21 is provided with two first clamping grooves matched with the first buckles 212 for use, the upper plate wall of the fixing plate 21 is provided with two second clamping grooves matched with the second buckles 215 for use, when in use, the whole device is moved to a designated working area through universal wheels 5 at the lower ends of the two bottom plates 1, then a cover plate 8 at the top end of the publicity plate 7 can be opened to place contents to be publicized into the publicity plate 7, and people can see the publicized contents through the observation window 6, when people who need to watch the publicity plate 7 need to shade, can stimulate pull rod 22 who shelters from in the device 2 downwards, make two first buckles 212 of backup pad 211 lower extreme and the first draw-in groove joint in the fixed plate 21, can make two shielding plates 214 that run through the activity groove 26 shelter from sunshine to the people who watches publicity board 7, when needs shelter from the rainwater, can upwards stimulate pull rod 22, make second buckle 215 and the second draw-in groove looks joint of backup pad 211 upper end, make two shielding plates 214 shelter from the adjustment of angle under the effect of axis of rotation 213 in activity groove 26, can shelter from the rainwater.
Referring to fig. 1-4, both sides of the lower end of the fixing plate 21 are connected with mounting brackets 24, the lower ends of the mounting brackets 24 are connected with mounting buckles 25, and the top ends of the connecting blocks 9 are provided with mounting grooves matched with the mounting buckles 25 for use, when the shielding device 2 is not needed, the fixing plate 21 can be directly pulled upwards, so that the mounting buckles 25 connected with the two mounting brackets 24 at the lower end of the fixing plate can be separated from the connecting blocks 9, and the shielding device 2 can be detached from the whole device.
Referring to fig. 1-4, the lifting device 3 includes a driving box 31, the lower end of the driving box 31 is fixedly connected to the bottom plate 1, the top end of the driving box 31 is connected to a vertical rod 35, one end of the vertical rod 35 is provided with a moving slot 34, a driving motor 38 is installed inside the driving box 31, an output end of the driving motor 38 is connected to a threaded rod 37, one end of the threaded rod 37 penetrates through the vertical rod 35 and is rotatably connected to an upper inner wall of the vertical rod 35, a moving block 36 is sleeved on an outer surface of the threaded rod 37, one end of the moving block 36 penetrates through the moving slot 34 and is connected to a supporting frame 33, the top end of the supporting frame 33 is provided with a connecting slot 32, when the height position of the publicity board 7 needs to be adjusted, the driving motors 38 in the driving boxes 31 in the two lifting devices 3 can be started, so that the driving motor 38, make the movable block 36 begin to reciprocate along threaded rod 37 to drive support frame 33 and reciprocate at the within range of shifting chute 34, in order to accomplish the adjustment to publicity board 7 height position, the publicity board 7 is watched to the people of different heights of being convenient for, when needs are dismantled publicity board 7 from whole device, can directly upwards stimulate publicity board 7, make the connector link and the spread groove 32 separation of publicity board 7 lower extreme connection can.
Referring to fig. 1-4, the stopping box 4 includes a box body 41, the lower end of the box body 41 is hollowed, the top end of the box body 41 is movably connected with a box plate 42, two ends of the box body 41 are both connected with two fixing buckles 48, the upper box wall of the box body 41 is connected with an air cylinder 43, the lower end of the air cylinder 43 is sleeved with a piston rod 46, the lower end of the piston rod 46 is connected with a friction plate 45, and the lower end of the friction plate 45 is provided with a plurality of protrusions 44, when the whole device is in a working state, the box plate 42 at the top end of the stopping box 4 can be opened and the air cylinder 43 in the middle box body 41 can be started, so that the piston rod 46 drives the friction plate 45 to move downwards until the protrusions 44 at the lower end of the friction plate 45 are in full contact with the ground, and the air cylinder 43 can be closed, at this time, the protrusions 44 increase the friction force between the whole device and the ground, the shielding device 2 and the publicity board 7 need to be detached from the whole device, and the two driving boxes 31 are pulled, so that the fixing buckles 48 at the two ends of the box body 41 are respectively separated from the fixing grooves at one ends of the two driving boxes 31, and the locking box 4 can be detached from the whole device.
Referring to fig. 1-4, one end of the driving box 31 is provided with two fixing slots for cooperating with the fixing fasteners 48, and the vertical cross-sectional dimension of the driving box 31 is the same as that of the box body 41, so that the locking box 4 is easy to detach from the whole device.
Referring to fig. 1-4, both sides of the lower end of the publicity board 7 are connected with connecting buckles used in cooperation with the connecting grooves 32, so that the worker can conveniently take down the publicity board 7 to replace the contents in the publicity board 7.
The working principle is as follows: when the device is used, the whole device is moved to a designated working area through the universal wheels 5 at the lower ends of the two bottom plates 1, then the cover plate 8 at the top end of the publicity board 7 can be opened to put the contents to be publicized into the publicity board 7, and people can see the publicized contents through the observation window 6, when the people watching the publicity board 7 need to be sheltered from sunlight, the pull rod 22 in the sheltering device 2 can be pulled downwards, the two first buckles 212 at the lower end of the supporting plate 211 are clamped with the first clamping grooves in the fixed plate 21, so that the two sheltering plates 214 penetrating through the movable groove 26 can shelter from the sunlight for the people watching the publicity board 7, when the rainwater needs to be sheltered, the pull rod 22 can be pulled upwards, the second buckle 215 at the upper end of the supporting plate 211 is clamped with the second clamping groove, so that the two sheltering plates 214 can be sheltered from the adjustment of the angle in the movable, when the shielding device 2 is not needed, the fixing plate 21 can be directly pulled upwards to separate the mounting buckles 25 connected with the two mounting frames 24 at the lower end of the fixing plate from the connecting block 9, so that the shielding device 2 can be detached from the whole device, when the height position of the publicity board 7 needs to be adjusted, the driving motors 38 in the driving boxes 31 in the two lifting devices 3 can be started, the driving motors 38 drive the threaded rods 37 in the vertical rods 35 to rotate, the moving blocks 36 start to move up and down along the threaded rods 37, so that the supporting frames 33 are driven to move up and down in the range of the moving grooves 34, so that the height position of the publicity board 7 can be adjusted, people with different heights can watch the publicity board 7 conveniently, when the publicity board 7 needs to be detached from the whole device, the publicity board 7 can be directly pulled upwards, so that the connecting buckles connected with the lower end of the publicity board 7 are separated from the connecting grooves 32, when the whole device is in a working state, the box plate 42 at the top end of the stop box 4 can be opened, the cylinder 43 in the middle box body 41 is started, the piston rod 46 drives the friction plate 45 to move downwards until the bulge 44 at the lower end of the friction plate 45 is completely contacted with the ground, and then the cylinder 43 can be closed, at this time, the bulge 44 increases the friction force between the whole device and the ground, so that the whole device cannot easily slide, when the stop box 4 needs to be detached from the whole device, the shielding device 2 and the publicity plate 7 need to be detached from the whole device firstly, and the two driving boxes 31 are pulled, so that the fixing buckles 48 at the two ends of the box body 41 are respectively separated from the fixing grooves at one ends of the two driving boxes 31, and then the stop box 4 can be detached from the whole.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A marketing planning device comprising a base plate (1), characterized in that: the two bottom plates (1) are arranged, universal wheels (5) are connected to two sides of the lower ends of the two bottom plates (1), lifting devices (3) are connected to the top ends of the bottom plates (1), a stop box (4) is connected between the lower portions of opposite surfaces of the two lifting devices (3), a publicity board (7) is connected between the upper portions of the opposite surfaces of the two lifting devices (3), a cover plate (8) is movably connected to the top end of the publicity board (7), an observation window (6) is installed at one end of the publicity board (7), connecting blocks (9) are connected to the top ends of the lifting devices (3), and shielding devices (2) are clamped to the top ends of the two connecting blocks (9) together;
the shielding device (2) comprises a fixed plate (21), two ends of the fixed plate (21) are respectively provided with a movable groove (26), the top end of the fixed plate (21) is connected with a pull rod (22) in an inserting way, the lower end of the pull rod (22) extends to the inside of the fixing plate (21) and is connected with a supporting plate (211), both ends of the supporting plate (211) are connected with rotating shafts (213), one ends of the two rotating shafts (213) far away from the supporting plate (211) are connected with shielding plates (214), one end of each of the two shielding plates (214) respectively penetrates through the two movable grooves (26), the lower end of the fixed plate (21) is connected with two first buckles (212), and the top end of the fixed plate (21) is connected with two second buckles (215), the lower plate wall of the fixed plate (21) is provided with two first clamping grooves matched with the first buckles (212) for use, and the upper plate wall of the fixed plate (21) is provided with two second clamping grooves matched with the second buckles (215) for use.
2. A marketing planning device according to claim 1, wherein: the lower extreme both sides of fixed plate (21) all are connected with mounting bracket (24), the lower extreme of mounting bracket (24) all is connected with the installation and detains (25), and the mounting groove that cooperation installation detained (25) and use is all opened on the top of connecting block (9).
3. A marketing planning device according to claim 1, wherein: elevating gear (3) are including drive case (31), and the lower extreme and bottom plate (1) fixed connection of drive case (31), the top of drive case (31) is connected with montant (35), shifting chute (34) have been opened to the one end of montant (35), the internally mounted of drive case (31) has driving motor (38), the output of driving motor (38) is connected with threaded rod (37), and the one end of threaded rod (37) runs through montant (35) and rotates with the last inner wall of montant (35) to be connected, movable block (36) have been cup jointed to the surface of threaded rod (37), and the one end of movable block (36) runs through shifting chute (34) and is connected with support frame (33), open on the top of support frame (33) has spread groove (32).
4. A marketing planning device according to claim 1, wherein: the stop box (4) comprises a box body (41), a box plate (42) is movably connected to the top end of the box body (41), two fixing buckles (48) are connected to the two ends of the box body (41), an air cylinder (43) is connected to the upper box wall of the box body (41), a piston rod (46) is sleeved at the lower end of the air cylinder (43), a friction plate (45) is connected to the lower end of the piston rod (46), and a plurality of bulges (44) are arranged at the lower end of the friction plate (45).
5. A marketing planning device according to claim 3, wherein: one end of the driving box (31) is provided with two fixing grooves matched with the fixing buckles (48) for use, and the vertical section size of the driving box (31) is the same as that of the box body (41).
6. A marketing planning device according to claim 3, wherein: the lower extreme both sides of publicity board (7) all are connected with the connector link that cooperation spread groove (32) used.
CN202011029384.1A 2020-09-27 2020-09-27 Marketing planning device Pending CN112133224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011029384.1A CN112133224A (en) 2020-09-27 2020-09-27 Marketing planning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011029384.1A CN112133224A (en) 2020-09-27 2020-09-27 Marketing planning device

Publications (1)

Publication Number Publication Date
CN112133224A true CN112133224A (en) 2020-12-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011029384.1A Pending CN112133224A (en) 2020-09-27 2020-09-27 Marketing planning device

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Country Link
CN (1) CN112133224A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205194282U (en) * 2015-11-09 2016-04-27 石家庄铁道大学 Multifunctional advertising board
CN206758068U (en) * 2017-02-14 2017-12-15 象山仲堇生物科技有限公司 A kind of promotional plate in terms of education for computer
CN206907417U (en) * 2017-02-26 2018-01-19 陈洁冰 One kind is had a rest formula sports culture propagandizing device
CN109973907A (en) * 2019-03-22 2019-07-05 安徽艳阳电气集团有限公司 A kind of environment-friendly and energy-efficient LED light being easily installed disassembly
CN209433807U (en) * 2019-01-24 2019-09-24 宋颜玲 Display board is used in a kind of family planning publicity
CN110700387A (en) * 2019-11-20 2020-01-17 陈炳荣 Noise reduction type building indoor floor drain based on fan-shaped diversion
CN210489148U (en) * 2019-08-23 2020-05-08 重庆师范大学涉外商贸学院 Rotary propaganda device for entrepreneurship
CN210743303U (en) * 2019-09-26 2020-06-12 湖南有色金属职业技术学院 Portable display device of political affairs study usefulness is thought to open air

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205194282U (en) * 2015-11-09 2016-04-27 石家庄铁道大学 Multifunctional advertising board
CN206758068U (en) * 2017-02-14 2017-12-15 象山仲堇生物科技有限公司 A kind of promotional plate in terms of education for computer
CN206907417U (en) * 2017-02-26 2018-01-19 陈洁冰 One kind is had a rest formula sports culture propagandizing device
CN209433807U (en) * 2019-01-24 2019-09-24 宋颜玲 Display board is used in a kind of family planning publicity
CN109973907A (en) * 2019-03-22 2019-07-05 安徽艳阳电气集团有限公司 A kind of environment-friendly and energy-efficient LED light being easily installed disassembly
CN210489148U (en) * 2019-08-23 2020-05-08 重庆师范大学涉外商贸学院 Rotary propaganda device for entrepreneurship
CN210743303U (en) * 2019-09-26 2020-06-12 湖南有色金属职业技术学院 Portable display device of political affairs study usefulness is thought to open air
CN110700387A (en) * 2019-11-20 2020-01-17 陈炳荣 Noise reduction type building indoor floor drain based on fan-shaped diversion

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Application publication date: 20201225

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