CN108074509B - Directional rotating polarized light reflection advertisement improvement device and control method thereof - Google Patents
Directional rotating polarized light reflection advertisement improvement device and control method thereof Download PDFInfo
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- CN108074509B CN108074509B CN201810071420.7A CN201810071420A CN108074509B CN 108074509 B CN108074509 B CN 108074509B CN 201810071420 A CN201810071420 A CN 201810071420A CN 108074509 B CN108074509 B CN 108074509B
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- 230000006872 improvement Effects 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 7
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 44
- 230000003068 static effect Effects 0.000 claims abstract description 17
- 238000005286 illumination Methods 0.000 claims abstract description 13
- 230000010287 polarization Effects 0.000 claims description 21
- 238000012545 processing Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
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- 229910052744 lithium Inorganic materials 0.000 claims description 3
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- 230000007547 defect Effects 0.000 description 2
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- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
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- 238000012937 correction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
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- 230000003287 optical effect Effects 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F19/00—Advertising or display means not otherwise provided for
- G09F19/12—Advertising or display means not otherwise provided for using special optical effects
- G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133616—Front illuminating devices
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Abstract
The directional rotation polarized light reflection advertisement improvement device applies different voltages to each pixel point of the liquid crystal panel so as to adjust the transparency of each pixel point and adjust the sunlight illumination intensity reflected by each pixel point; the liquid crystal panel is used for displaying static and dynamic advertisements and text contents by applying driving voltage to the liquid crystal panel, and static and dynamic pictures and text contents to be displayed are directionally reflected to a designated area of the shadow wall body by the directional device. The invention utilizes sunlight as a light source, avoids energy consumption and waste, is energy-saving and environment-friendly, can well display various static and dynamic advertisements in daytime, has simple structure and novel mode, can generate brand new visual impact, and is easy to realize and popularize. The invention also provides an improved control method of the directional rotation polarized light reflection advertisement.
Description
Technical Field
The invention relates to the technical field of outdoor advertisement projection devices, in particular to a directional rotating polarized light reflection advertisement improvement device and a control method thereof.
Background
The projection advertisement utilizes a high-power projection device, applies an optical projection principle, adopts a high-brightness light source, projects full-color advertisement content on a negative film onto an outer wall of a high-rise building, and forms outdoor advertisement with extremely rich visual impact at night.
Projection technology can be applied in outdoor environments: building facades, public buildings, stadiums (at night).
Due to the novelty of the projection advertisement, consumers can bet more attention on the projection advertisement, when watching exquisite and dynamic projection pictures, the products can unconsciously walk into the mind of the concerned, and for outdoor advertisements, the advantage of the dynamic projection advertisement is more obvious. The traditional outdoor advertisement can not attract the sight of consumers, a new advertisement which can be made on the wall, the ground, the window and the roof can firmly grasp the curiosity of the consumers, the projection advertisement can bring a brand new visual impact to the consumers, and the projection advertisement has incomparable advantages.
The projection advertisement can generate novel effects of animation, rotation, fluttering and the like, the advertisement expression method is flexible, novel and fashionable, the sight of audiences can be effectively attracted, and the return rate and the average browsing time are improved.
The projection advertising device has the advantages and the defects which cannot be avoided, when the projection advertising device works, a single lamp often cannot meet the requirement of high brightness, the problem of high-brightness projection is usually solved through a multi-lamp superposition technology, 2-10 superposed lamps are adopted, and the consumption of a large amount of power resources is increased while a giant advertisement with satisfactory brightness is played.
In daytime, due to the interference of external natural light, the projection advertisement device cannot project satisfactory effects, can only project advertisements at night, and has higher requirements on the environment.
The invention relates to a directional rotating polarized light reflection advertising device, which forms a rotating polarized light device matrix by uniformly and equidistantly distributing a plurality of rotating polarized light devices, wherein each rotating polarized light device is equivalent to a pixel point, the plurality of rotating polarized light devices are combined together to display static and dynamic pictures and text contents, and the static and dynamic pictures and the text contents are expressed and displayed by light rays with different illumination intensities by controlling the included angle between each pixel point in the displayed pictures or the text, namely a first polarized light sheet and a second polarized light sheet in the rotating polarized light device.
Firstly, a plurality of rotating polarization devices are fixed on a supporting plate, the rotating polarization devices positioned on the supporting plate are uniformly distributed at equal intervals to form a rotating polarization device matrix, if light rays reflected by the rotating polarization devices are kept parallel, the manufacturing requirement and the installation requirement are higher, certain errors exist in the manufacturing and installation processes, certain deviation and overlapping occur to pixel points forming pictures and character display by the rotating polarization devices in certain quantity, and the display effect is not accurate.
Secondly, the number of the rotating polarization devices in the directional rotating polarization reflection advertisement device is limited, the number of pixel points forming the picture and character display is small, the resolution ratio is low, and rich picture and character contents cannot be expressed.
Secondly, the rotating polarization device in the directional rotating polarization reflection advertising device is easy to have mechanical faults and circuit faults, if abundant pictures and text contents are expressed, at least hundreds of pixel points are needed, namely hundreds of rotating polarization devices are needed, the hundreds of rotating polarization devices are relatively independent, the probability of mechanical faults and circuit faults is greatly increased, and the structure is relatively complex.
Secondly, due to the difference of incident angles in one day, the pictures or the character contents reflected to the designated area of the back wall body by the directional rotating polarized light reflection advertising device have certain deformation, and the correction and reduction processing on the deformed pictures or character contents does not exist in the directional rotating polarized light reflection advertising device.
Finally, the directional rotation polarized light reflection advertisement device has a slow switching speed for the dynamic picture, and the display of the dynamic advertisement is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a brand-new advertisement display mode: the transparency of each pixel point is adjusted by applying different voltages to each pixel point of the liquid crystal panel, so that the illumination intensity of sunlight reflected by the device is adjusted; the liquid crystal panel is used for displaying static and dynamic advertisements and text contents by applying driving voltage to the liquid crystal panel, and static and dynamic pictures and text contents to be displayed are directionally reflected to a designated area of the shadow wall body by the directional device. The invention utilizes sunlight as a light source, avoids energy consumption and waste, and is energy-saving and environment-friendly; the advertisement display device can well display various static and dynamic advertisements in the daytime, has a simple structure and a novel mode, and can generate brand new visual impact.
The invention is realized by adopting the following technical scheme, and the directional rotating polarized light reflection advertisement improvement device designed according to the purpose comprises: the system comprises a main control module, a rotary polarization device, a directional device, a light intensity detection unit, a wireless communication unit, a power management unit, a lithium battery, an advertisement data updating unit, a storage unit, an advertisement database, a picture deformation processing unit, a driving unit and a display unit.
The rotating polarization device includes: the liquid crystal display panel comprises a glass plate, a first polarizer, a liquid crystal panel, a second polarizer and a plane mirror.
The glass plate is located at the topmost layer, the first polarizer is located below the glass plate, the liquid crystal panel is located below the first polarizer, the second polarizer is located below the liquid crystal panel, and the plane mirror is located below the second polarizer.
When no driving voltage is applied to the liquid crystal panel, the liquid crystal molecules are regularly arranged to present a transparent state; the driving voltage is applied to the liquid crystal panel, and the voltage causes the arrangement direction of liquid crystal molecules to change to shield light, so that the transparency of the liquid crystal panel is controlled.
The first polarizer and the second polarizer are arranged along the same polarization direction.
When no driving voltage is applied to the liquid crystal panel, the device is in a transparent state; when the maximum driving voltage is applied to all the pixel points of the liquid crystal panel, the device is in a completely opaque state.
Different voltages are applied to each pixel point of the liquid crystal panel, so that the transparency of each pixel point is adjusted.
The rotating polarization device applies different voltages to all pixel points of the whole liquid crystal panel so as to display static and dynamic pictures and text contents.
The orientation device directionally reflects the static and dynamic pictures and the text contents to be displayed to the designated area of the shadow wall.
The illumination intensity detection unit is used for detecting the illumination intensity of sunlight, and when the illumination intensity of the sunlight is greater than a preset value, the directional rotating polarized light reflection advertisement improvement device starts to work; and when the sunlight illumination intensity is not greater than a preset value, the directional rotating polarized light reflection advertisement improvement device stops working.
The wireless communication unit carries out wireless communication through infrared rays, Bluetooth, WiFI or Zigbee.
The power supply management unit is used for carrying out charging management on the lithium battery.
The advertisement data updating unit updates the data in the advertisement database through the wireless communication unit.
The storage unit is used for storing the updated advertisement content.
The picture deformation processing unit carries out deformation processing on static and dynamic pictures and character contents to be displayed by the liquid crystal panel at different moments in a day, so that the picture contents reflected to the wall body are close to a real shape.
The driving unit is used for driving the rotating polarization device, the orientation device and the display unit.
The display unit is used for displaying the operation interface information.
A directional rotation polarized light reflection advertisement improvement control method comprises the following steps: sunlight is used as an incident light source, advertisement picture contents extracted from an advertisement database are displayed through a liquid crystal panel, and the picture displayed by the liquid crystal panel is subjected to deformation processing at different times in a day, so that the picture directionally reflected to the designated area of the shady wall body is close to a real shape.
Drawings
FIG. 1 is a logic diagram of the present invention.
FIG. 2 is a schematic diagram of a part of the structure of the present invention.
Fig. 3 is a schematic diagram of the operation of the present invention.
In fig. 2, 101 is a glass plate, 102 is a first polarizer, 103 is a liquid crystal panel, 104 is a second polarizer, 105 is a plane mirror, and 106 is a projection.
Detailed Description
The 105 plane mirror in the rotating polarization device can be replaced by a convex mirror or a concave mirror with a certain curvature, so that the pixel point can be enlarged or reduced.
The 103 liquid crystal panel is a black and white liquid crystal panel.
The invention is further illustrated with reference to the accompanying drawings and specific examples.
First embodiment
Referring to fig. 2, when sunlight irradiates the rotating polarization device, and no driving voltage is applied to the liquid crystal panel 103, the device is in a transparent state, for example, a white area in projection 106, light sequentially passes through the first polarizing plate 102, the liquid crystal panel 103 and the second polarizing plate 104 to reach the plane mirror 105, then is reflected by the plane mirror 105, and the reflected light sequentially passes through the second polarizing plate 104, the liquid crystal panel 103 and the first polarizing plate 102 to reach a designated area of a wall. When no driving voltage is applied to the liquid crystal panel 103, the loss of light reflected by the plane mirror 105 is minimized.
When the maximum driving voltage is applied to all pixel points of the liquid crystal panel 103, the device is in a completely opaque state, for example, a black area in 106 projection, light rays pass through the first polarizer 102 and the liquid crystal panel 103 to reach the second polarizer 104 in sequence, incident light rays are completely shielded, and the incident light rays cannot reach the plane mirror 105. When the maximum driving voltage is applied to all pixel points of the liquid crystal panel 103, the reflected light is completely shielded, and the light loss is the most.
By applying different voltages to each pixel of the liquid crystal panel 103, the transparency of each pixel is adjusted, and the illumination intensity of the reflected light is adjusted.
Due to the limitation of human eye resolution, generally, one pixel is represented by 4 bits, that is, one pixel point can have 16 kinds of illumination intensity of 2 to the power of 4.
Second embodiment
As shown in fig. 3, the rotating polarizer applies different voltages to all pixels of the entire 103 lcd panel, thereby displaying static and moving pictures and text.
The picture deformation processing unit carries out deformation processing on the static and dynamic pictures and the character contents to be displayed on the liquid crystal panel 103 at different moments in a day, so that the picture contents reflected to the wall body are close to the real shape.
The orientation device directionally reflects the static and dynamic pictures and the text contents to be displayed to the designated area of the shadow wall.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; all equivalent changes and modifications made according to the present invention are covered by the scope of the claims of the present invention.
Claims (5)
1. A directional rotation polarized light reflection advertisement improvement device is characterized in that the directional rotation polarized light reflection advertisement improvement device comprises:
a rotating polarizing device: different voltages are applied to all pixel points of the whole liquid crystal panel, so that static and dynamic pictures and character contents are displayed;
orientation device: directionally reflecting static and dynamic pictures and text contents to be displayed to a designated area of the shadow wall;
an illumination intensity detection unit: the device is used for detecting the illumination intensity of sunlight, and when the illumination intensity of the sunlight is greater than a preset value, the directional rotating polarized light reflection advertisement improvement device starts to work; when the sunlight illumination intensity is not greater than a preset value, the directional rotation polarized light reflection advertisement improvement device stops working;
the wireless communication unit: wireless communication is carried out through infrared, Bluetooth, WiFI or Zigbee;
a power management unit: the system is used for carrying out charging management on the lithium battery;
advertisement data update unit: updating the data in the advertisement database through the wireless communication unit;
a storage unit: for storing updated advertising content;
a screen deformation processing unit: performing deformation processing on static and dynamic pictures and text contents to be displayed by the liquid crystal panel at different moments in a day to enable the picture contents reflected to the wall to be close to a real shape;
a drive unit: for driving the rotating polarizer, the orientation device and the display unit;
a display unit: and the display module is used for displaying the information of the operation interface.
2. A directionally rotating polarized light reflective advertising enhancement device as claimed in claim 1, wherein said rotating polarizing device comprises: the liquid crystal display panel comprises a glass plate, a first polarizer, a liquid crystal panel, a second polarizer and a plane mirror; the glass plate is located at the topmost layer, the first polarizer is located below the glass plate, the liquid crystal panel is located below the first polarizer, the second polarizer is located below the liquid crystal panel, the plane mirror is located below the second polarizer, and the first polarizer and the second polarizer are placed in the same direction of polarization direction.
3. A directionally rotating polarized light reflective advertising enhancement device as claimed in claim 1, wherein: the plane mirror in the rotating polarization device can be replaced by a convex mirror or a concave mirror with a certain curvature.
4. A directionally rotating polarized light reflective advertising enhancement device as claimed in claim 1, wherein: the liquid crystal panel in the rotating polarization device is a black and white liquid crystal panel.
5. A directional rotation polarized light reflection advertisement improvement control method is characterized in that: sunlight is used as an incident light source, advertisement picture contents extracted from an advertisement database are displayed through a liquid crystal panel, and the picture displayed by the liquid crystal panel is subjected to deformation processing at different times in a day, so that the picture directionally reflected to the designated area of the shady wall body is close to a real shape.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810071420.7A CN108074509B (en) | 2018-01-25 | 2018-01-25 | Directional rotating polarized light reflection advertisement improvement device and control method thereof |
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| CN201810071420.7A CN108074509B (en) | 2018-01-25 | 2018-01-25 | Directional rotating polarized light reflection advertisement improvement device and control method thereof |
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| CN108074509B true CN108074509B (en) | 2020-08-14 |
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|---|---|---|---|---|
| US1712371A (en) * | 1926-04-30 | 1929-05-07 | Frank J Wilkins | Shadow-letter production for educational and commercial purposes |
| US5664353A (en) * | 1992-12-23 | 1997-09-09 | M A N Systemelektronik Gmbh | Method and arrangement for optically representing information |
| CN1369090A (en) * | 1999-05-12 | 2002-09-11 | 崔林 | Signboard using liquid crystal display panel |
| CN1875391A (en) * | 2003-11-06 | 2006-12-06 | 皇家飞利浦电子股份有限公司 | Switchable transparent display |
| CN1918614A (en) * | 2004-02-05 | 2007-02-21 | Dis技术有限公司 | LCD billboard |
| CN201035266Y (en) * | 2006-09-05 | 2008-03-12 | 国华 | Novel sun film having advertisement function |
| WO2016138233A2 (en) * | 2015-02-25 | 2016-09-01 | The Regents Of The University Of Michigan | Interactive projection system |
-
2018
- 2018-01-25 CN CN201810071420.7A patent/CN108074509B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1712371A (en) * | 1926-04-30 | 1929-05-07 | Frank J Wilkins | Shadow-letter production for educational and commercial purposes |
| US5664353A (en) * | 1992-12-23 | 1997-09-09 | M A N Systemelektronik Gmbh | Method and arrangement for optically representing information |
| CN1369090A (en) * | 1999-05-12 | 2002-09-11 | 崔林 | Signboard using liquid crystal display panel |
| CN1875391A (en) * | 2003-11-06 | 2006-12-06 | 皇家飞利浦电子股份有限公司 | Switchable transparent display |
| CN1918614A (en) * | 2004-02-05 | 2007-02-21 | Dis技术有限公司 | LCD billboard |
| CN201035266Y (en) * | 2006-09-05 | 2008-03-12 | 国华 | Novel sun film having advertisement function |
| WO2016138233A2 (en) * | 2015-02-25 | 2016-09-01 | The Regents Of The University Of Michigan | Interactive projection system |
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Effective date of registration: 20200709 Address after: 318020, Chengjiang street, Huangyan District, Zhejiang City, Taizhou Province, near the West Village Applicant after: TAIZHOU HAOZIBANG INDUSTRIAL DESIGN Co.,Ltd. Address before: 065201 College of Electronic Information Engineering, North China Institute of Science and Technology, Yanjiao Economic and Technological Development Zone, Sanhe City, Langfang City, Hebei Province Applicant before: Song Yanzhen |
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Denomination of invention: Improved device for directional rotary polarized light reflection advertisement and its control method Effective date of registration: 20211230 Granted publication date: 20200814 Pledgee: Taizhou Huangyan sub branch of Zhejiang Tailong Commercial Bank Co.,Ltd. Pledgor: TAIZHOU HAOZIBANG INDUSTRIAL DESIGN CO.,LTD. Registration number: Y2021980017306 |
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Date of cancellation: 20231027 Granted publication date: 20200814 Pledgee: Taizhou Huangyan sub branch of Zhejiang Tailong Commercial Bank Co.,Ltd. Pledgor: TAIZHOU HAOZIBANG INDUSTRIAL DESIGN CO.,LTD. Registration number: Y2021980017306 |