CN203981912U - False proof grating, anti-false trademark, gilding film and composite membrane - Google Patents
False proof grating, anti-false trademark, gilding film and composite membrane Download PDFInfo
- Publication number
- CN203981912U CN203981912U CN201420401029.6U CN201420401029U CN203981912U CN 203981912 U CN203981912 U CN 203981912U CN 201420401029 U CN201420401029 U CN 201420401029U CN 203981912 U CN203981912 U CN 203981912U
- Authority
- CN
- China
- Prior art keywords
- grating
- false proof
- cycle
- sinusoidal
- false
- 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.)
- Active
Links
Abstract
The utility model proposes a kind of false proof grating, it has hyperchannel color changeable effect, described false proof grating comprises basalis, grating information layer and the dielectric layer of stratification successively, described grating information layer is the sub-wave length grating of the sinusoidal relief type quasi-reflection of one dimension volume, described sub-wave length grating is binary cycle grating, it comprises minor cycle sinusoidal grating and large period sinusoidal grating, and the cycle of described minor cycle sinusoidal grating is 320～420nm, and the cycle of described large period sinusoidal grating is 600～900nm.Described false proof grating has hyperchannel color changeable effect, can combine well with expert's identification false proof the public, can effectively strengthen anti-counterfeit capability and the range of application of antifalsification label.The utility model provides anti-false trademark, gilding film and composite membrane in addition.
Description
Technical field
The utility model relates to field of anti-counterfeit technology, relates in particular to a kind of anti-false trademark, gilding film and composite membrane that has the false proof grating of hyperchannel color changeable effect and have this false proof grating.
Background technology
The Techniques of Optical Security rising along with current era development in science and technology is that a kind of physical optics of mainly utilizing is carried out false proof means to product.Its ultimate principle is while utilizing light to propagate in various bearing mediums, the various optical characteristics such as the transmission that produces, refraction, diffraction can make the anti-fake product forming in the time observing, obtain corresponding optical effect, and this false proof mode can have uniqueness and uniqueness, be difficult for copying.Holographic laser raster anti-counterfeiting technology not only can present the main image of object or design configuration, can also make image along with the change of viewing angle is rich color and variation by the principle of optical diffraction.This anti-counterfeiting technology content is high, equipment is superior, production run is complicated, and after processing, product is very easily destroyed, thereby has quite high art and false proof value.
The develop rapidly of China's planned economy has brought the tinkling of jades commodity that meet the eye on every side.Baneful influence market economy being brought in order to control counterfeit and shoddy goods, except setting up registered trademark system, also will develop anti-false trademark, with specification commodity economy and market development.Anti-false trademark refers to and can transfer on the packing of product or adjunct by modes such as stickup, printings, and has the mark of anti-fake effect.
At present existing false proof registered trademark comprises laser holographic mark, two-dimentional code anti-fake, anti-forgery ink printing etc., and these false proof means are because its physical principle is easily understood, can suitability for industrialized production, and therefore cost of manufacture is lower and be beneficial to extensive popularization.But along with the universal of these technology with come into the open, make its antiforge function obviously decline, allow fraud businessman have an opportunity to take advantage of, be therefore badly in need of seeking the complicated but false proof mode simple for production of a kind of design concept, the development that continues anti-false trademark.
From false proof angle, generally can be divided into that the public is false proof, professional is false proof and false proof three levels of expert.The public is false proof to be referred to without by any instrument, user only with eyes see, ear, hand touch the false proof means that can distinguish authenticity of products.The false proof of two other level need to be by instrument and equipment, and the particular attribute that the special material in anti-fake product is had is identified.Along with scientific and technological development and growing material and cultural needs, the simple public is false proof and expert is false proof can not meet already.Therefore the high-new anti-counterfeiting technology that, research has the public and an expert's double anti-forge function is trend of the times.
Utility model content
For the problems referred to above, the purpose of this utility model is to provide a kind of false proof grating with hyperchannel color changeable effect, has the public and expert's double anti-forge function.
A kind of false proof grating, it has hyperchannel color changeable effect, described false proof grating comprises basalis, grating information layer and the dielectric layer of stratification successively, described grating information layer is the sub-wave length grating of the sinusoidal relief type quasi-reflection of one dimension volume, described sub-wave length grating is binary cycle grating, it comprises minor cycle sinusoidal grating and large period sinusoidal grating, and the cycle of described minor cycle sinusoidal grating is 320～420nm, and the cycle of described large period sinusoidal grating is 600～900nm.
In the utility model one preferred embodiments, the refractive index of described grating information layer is 1.4～1.9.
In the utility model one preferred embodiments, the refractive index of described dielectric layer is greater than 1.9, and thickness is 25～60nm.
In the utility model one preferred embodiments, while observing described false proof grating with 25～miter angle, observe around the axle rotation perpendicular to the plane of delineation, can reproduce the beautiful high-purity light of different colours; While observing described false proof grating with 60～80 degree angles and with 5～30 degree angles, observing perpendicular to grating grid in-plane, all can see first-order diffraction iridescence.
In the utility model one preferred embodiments, observing false proof grating perpendicular to grating grid in-plane, in the time that incident light is 70 ° and 15 °, reproduction be all to dazzle beautiful first-order diffraction iridescence.
The utility model provides a kind of anti-false trademark, and the main part of described anti-false trademark is false proof grating described above.
The utility model provides a kind of gilding film, it comprises basalis, release layer, grating information layer, dielectric layer and the hot melt gum layer of stratification successively, described grating information layer is the sub-wave length grating of the sinusoidal relief type quasi-reflection of one dimension volume, described sub-wave length grating is binary cycle grating, it comprises minor cycle sinusoidal grating and large period sinusoidal grating, the cycle of described minor cycle sinusoidal grating is 320～420nm, and the cycle of described large period sinusoidal grating is 600～900nm.
The utility model provides a kind of composite membrane, it comprises basalis, grating information layer, dielectric layer and the black pressure-sensitive adhesive layer of stratification successively, described grating information layer is the sub-wave length grating of the sinusoidal relief type quasi-reflection of one dimension volume, described sub-wave length grating is binary cycle grating, it comprises minor cycle sinusoidal grating and large period sinusoidal grating, the cycle of described minor cycle sinusoidal grating is 320～420nm, and the cycle of described large period sinusoidal grating is 600～900nm.
With respect to prior art, described false proof grating has hyperchannel color changeable effect, can combine well with expert's identification false proof the public, can effectively strengthen anti-counterfeit capability and the range of application of antifalsification label.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of instructions, and for above-mentioned and other objects, features and advantages of the present utility model can be become apparent, below especially exemplified by embodiment, and coordinate accompanying drawing, be described in detail as follows.
Brief description of the drawings
The schematic diagram of the false proof grating that Fig. 1 provides for the utility model the first embodiment;
Fig. 2 a to Fig. 2 d is the zero level transmissivity test pattern of false proof grating shown in Fig. 1;
The schematic diagram of the gilding film that Fig. 3 provides for the utility model the 3rd embodiment;
The schematic diagram of the composite membrane that Fig. 4 provides for the utility model the 4th embodiment.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
Refer to Fig. 1, the utility model provides a kind of false proof grating 100, it has hyperchannel color changeable effect, described false proof grating 100 comprises basalis 10, grating information layer 20 and the dielectric layer 30 of stratification successively, described grating information layer 20 is the sub-wave length grating of the sinusoidal relief type quasi-reflection of one dimension volume, described sub-wave length grating is binary cycle grating, it comprises minor cycle sinusoidal grating and large period sinusoidal grating, the cycle of described minor cycle sinusoidal grating is 320～420nm, and the cycle of described large period sinusoidal grating is 600～900nm.
Be understandable that, the grating information layer 20 in described false proof grating 100 is binary cycle optical grating construction.
While making described false proof grating 100, described grating information layer 20 and described dielectric layer 30 are formed at the surface, the same side of described basalis 10 successively, wherein, described dielectric layer 30 is for being formed at the surperficial coating of described grating information layer 20, and its shape, structure are determined by shape, the structure of described grating information layer 20.
In the present embodiment, described basalis 10 is made up of thermoplastic resin or glass, particularly, can adopt and make as materials such as polycarbonate (PC), polyethylene terephthalate (PET), Polyvinylchloride (PVC), polymethylmethacrylate (PMMA), tygon (PE) or polypropylene (BOPP).
In the present embodiment, described grating information layer 20 is made up of transparent resin, and its refractive index is 1.4～1.9, and described grating information layer 20 is formed by the hot pressing of nickel mother matrix, be understandable that, described nickel mother matrix can be made by the hyperfine photoetching of laser hologram or the accurate exposure technique of electron beam.
In the present embodiment, described dielectric layer 30 is made up of high refractive index transparent material, and its refractive index is different from the refractive index of described grating information layer 20.Preferably, the refractive index of described dielectric layer 30 is greater than 1.9, and thickness is 25～60nm.
Be understandable that, described high refractive index transparent material can be the materials such as zinc sulphide or titania.
Be understandable that, the characteristic dimension of sub-wave length grating has the identical order of magnitude with optical wavelength, light wave polarization has important impact to the diffracting effect of light wave, scalar diffraction theory can not practical requirement, must use the strict Vector Diffraction Theory based on Theory of Electromagnetic Field to analyze Grating Properties, such as rigorous coupled wave theory.The parameter that affects sub-wave length grating diffraction characteristic is a lot, comprise the cycle T, refractive index n 1, groove depth h of incident light wavelength, incidence angle θ, incident orientation angle and grating, thickness d, the refractive index n 2 of deielectric-coating etc. of plating deielectric-coating, when in these parameters, any one changes, diffraction efficiency all will change.When Grating Properties is analyzed, the present embodiment is based on rigorous coupled wave theory, utilize genetic algorithm iteration optimization to there is the false proof grating structural parameter of specific hyperchannel color changeable effect, comprise the cycle T, refractive index n 1, groove depth h of incidence angle θ, grating, the thickness d of plating deielectric-coating, the refractive index n 2 of deielectric-coating, these parameters mate mutually, make described false proof grating 100 have specific hyperchannel color changeable effect.
The hyperchannel color changeable effect of described false proof grating 100 specifically can be presented as:
By designing cycle T, refractive index n 1, groove depth h, the thickness d of plating deielectric-coating, the refractive index n 2 of deielectric-coating of grating of mutual coupling.Observing described false proof grating 100 perpendicular to grating grid in-plane, in the time that incident light is about 45 °, the color of the zero order light of reproduction is purple; In the time that incident light is about 42 °, the color of the zero order light of reproduction is blue; In the time that incident light is about 30 °, the color of the zero order light of reproduction is bright green; In the time that incident light is about 70 ° and 15 °, reproduction be to dazzle beautiful first-order diffraction iridescence.Observe described false proof grating 100 around rotate approximately 45 ° perpendicular to the axle of the plane of delineation, in the time that incident light is about 45 °, the color of the zero order light of reproduction is bright green; Around the axle rotation perpendicular to the plane of delineation, to 90 ° of described false proof gratings 100 of observation, in the time that incident light is about 45 °, the color of the zero order light of reproduction is golden yellow; In the time that incident light is about 30 °, the color of the zero order light of reproduction is peony.
Described false proof grating 100 has hyperchannel colour change function, even under cloudy day or dim astigmatic environment, also can all reproduce different colours at multiple viewing planes.Particularly, while observing described false proof grating 100 with 25～miter angle, observe around the axle rotation perpendicular to the plane of delineation, can reproduce the beautiful high-purity light of different colours, there is hyperchannel color changeable effect, and without additionally observing by optical instrument; Observe when described false proof grating 100 with 60～80 degree angles and with 5～30 degree angles, observing perpendicular to grating grid in-plane, all can see first-order diffraction iridescence.
For verifying the characteristic of described false proof grating 100, the present embodiment utilizes ultraviolet-visible pectrophotometer in the situation that of different viewing planes and Different Light incident angle, zero order reflection rate to described false proof grating 100 is tested, as shown in Fig. 2 a to 2d, known, described false proof grating 100 has the reflectivity higher than 80% at royal purple light, green glow, golden yellow light and red spectral band, and has the half-wave bandwidth higher than 50nm, and the high-purity luminance brightness that therefore described false proof grating 100 reproduces is high.
Be understandable that, utilize described false proof grating 100, can form the printing figure message that Clairvoyant type hologram marking film covers, be printed on confidential documents, above encrypted document, neither affect the observation of laser hologram image, also do not affect reading of document content.In the angle of normal reading file, because the reflection wavelength angle of incident angle and false proof figure does not overlap, its false proof figure can stash because cannot see, and does not affect the normal reading to document content; And by the document certain angle that tilts, the false proof figure of hiding will be shown.
Described false proof grating 100, under diffuse illumination condition, can obviously be observed hyperchannel color changeable effect by naked eyes, and change color is specific, describable; The zero order light of reproducing is polarized light, can utilize coherent detection instrument to identify.Therefore, described false proof grating 100 can combine with expert's identification well by false proof the public, can effectively strengthen anti-counterfeit capability and the range of application of antifalsification label.
Described false proof grating 100 also can combine with gilding film, composite membrane, transfer membrane etc., forms novel, diversified anti-fake product, is applied in the various products such as card card, tobacco and wine, clothes, cosmetics, medicine, computer hardware.
The utility model the second embodiment provide a kind of anti-false trademark, and its main part is described false proof grating 100.Described anti-false trademark combines relief type grating and reflective volume type grating well, therefore can be used in moulding replication, mass industrialized production, and cost is low.
Refer to Fig. 3, the utility model the 3rd embodiment provide a kind of gilding film 200, and it comprises basalis 10, grating information layer 20, dielectric layer 30, release layer 40 and hot melt gum layer 50.Described basalis 10, described release layer 40, described grating information layer 20, described dielectric layer 30 and described hot melt gum layer 50 stratification successively, described grating information layer 20 is the sub-wave length grating of the sinusoidal relief type quasi-reflection of one dimension volume, described sub-wave length grating is binary cycle grating, it comprises minor cycle sinusoidal grating and large period sinusoidal grating, the cycle of described minor cycle sinusoidal grating is 320～420nm, and the cycle of described large period sinusoidal grating is 600～900nm.
Described release layer 40 plays dissociation in the use of described gilding film 200, and the raw material using is all the wax that fusing point is 80-90 DEG C conventionally.Described hot melt gum layer 50 is the superficial layer of described gilding film 200, and it is covered in described dielectric layer 30, in the time of the use of described gilding film 200, plays the effect adhering to mutually with printed material surface.
Be understandable that, described gilding film 200 is the application of described false proof grating 100.
Refer to Fig. 4, the utility model the 4th embodiment provide a kind of composite membrane 300, and it comprises basalis 10, grating information layer 20, dielectric layer 30 and black pressure-sensitive adhesive layer 60.Described basalis 10, described grating information layer 20, described dielectric layer 30 and described black pressure-sensitive adhesive layer 60 stratification successively, described grating information layer 20 is the sub-wave length grating of the sinusoidal relief type quasi-reflection of one dimension volume, described sub-wave length grating is binary cycle grating, it comprises minor cycle sinusoidal grating and large period sinusoidal grating, the cycle of described minor cycle sinusoidal grating is 320～420nm, and the cycle of described large period sinusoidal grating is 600～900nm.
Described black pressure-sensitive adhesive 60 is covered in described dielectric layer 30, and it can absorb parasitic light, increases color contrast, strengthen hyperchannel color change effect.
Be understandable that, described composite membrane 300 is the application of described false proof grating 100.
The above, only embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with embodiment, but not in order to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be not depart from technical solutions of the utility model content, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (8)
1. a false proof grating, it has hyperchannel color changeable effect, it is characterized in that, described false proof grating comprises basalis, grating information layer and the dielectric layer of stratification successively, described grating information layer is the sub-wave length grating of the sinusoidal relief type quasi-reflection of one dimension volume, and described sub-wave length grating is binary cycle grating, and it comprises minor cycle sinusoidal grating and large period sinusoidal grating, the cycle of described minor cycle sinusoidal grating is 320～420nm, and the cycle of described large period sinusoidal grating is 600～900nm.
2. false proof grating as claimed in claim 1, is characterized in that, the refractive index of described grating information layer is 1.4～1.9.
3. false proof grating as claimed in claim 1, is characterized in that, the refractive index of described dielectric layer is greater than 1.9, and thickness is 25～60nm.
4. false proof grating as claimed in claim 1, is characterized in that, while observing described false proof grating, observes around the axle rotation perpendicular to the plane of delineation with 25～miter angle, can reproduce the beautiful high-purity light of different colours; While observing described false proof grating with 60～80 degree angles and with 5～30 degree angles, observing perpendicular to grating grid in-plane, all can see first-order diffraction iridescence.
5. false proof grating as claimed in claim 1, is characterized in that, is observing false proof grating perpendicular to grating grid in-plane, in the time that incident light is 70 ° and 15 °, reproduction be all to dazzle beautiful first-order diffraction iridescence.
6. an anti-false trademark, is characterized in that, the main part of described anti-false trademark is the false proof grating as described in claim 1～5 any one.
7. a gilding film, it is characterized in that, comprise basalis, release layer, grating information layer, dielectric layer and the hot melt gum layer of stratification successively, described grating information layer is the sub-wave length grating of the sinusoidal relief type quasi-reflection of one dimension volume, described sub-wave length grating is binary cycle grating, it comprises minor cycle sinusoidal grating and large period sinusoidal grating, and the cycle of described minor cycle sinusoidal grating is 320～420nm, and the cycle of described large period sinusoidal grating is 600～900nm.
8. a composite membrane, it is characterized in that, comprise basalis, grating information layer, dielectric layer and the black pressure-sensitive adhesive layer of stratification successively, described grating information layer is the sub-wave length grating of the sinusoidal relief type quasi-reflection of one dimension volume, described sub-wave length grating is binary cycle grating, it comprises minor cycle sinusoidal grating and large period sinusoidal grating, and the cycle of described minor cycle sinusoidal grating is 320～420nm, and the cycle of described large period sinusoidal grating is 600～900nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420401029.6U CN203981912U (en) | 2014-03-13 | 2014-07-18 | False proof grating, anti-false trademark, gilding film and composite membrane |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420114569.6 | 2014-03-13 | ||
| CN201420114569 | 2014-03-13 | ||
| CN201420401029.6U CN203981912U (en) | 2014-03-13 | 2014-07-18 | False proof grating, anti-false trademark, gilding film and composite membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203981912U true CN203981912U (en) | 2014-12-03 |
Family
ID=51979346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420401029.6U Active CN203981912U (en) | 2014-03-13 | 2014-07-18 | False proof grating, anti-false trademark, gilding film and composite membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203981912U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104786687A (en) * | 2015-05-12 | 2015-07-22 | 苏州印象镭射科技有限公司 | Manufacturing method of ink-free printing package |
| CN105574571A (en) * | 2015-12-23 | 2016-05-11 | 立德高科(北京)数码科技有限责任公司 | Grating lattice anti-counterfeiting mark, and generation method and generation system thereof |
| CN114891367A (en) * | 2021-01-26 | 2022-08-12 | 中钞特种防伪科技有限公司 | Flaky optical pigment, preparation method thereof and anti-counterfeiting element |
-
2014
- 2014-07-18 CN CN201420401029.6U patent/CN203981912U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104786687A (en) * | 2015-05-12 | 2015-07-22 | 苏州印象镭射科技有限公司 | Manufacturing method of ink-free printing package |
| CN105574571A (en) * | 2015-12-23 | 2016-05-11 | 立德高科(北京)数码科技有限责任公司 | Grating lattice anti-counterfeiting mark, and generation method and generation system thereof |
| CN114891367A (en) * | 2021-01-26 | 2022-08-12 | 中钞特种防伪科技有限公司 | Flaky optical pigment, preparation method thereof and anti-counterfeiting element |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103901517A (en) | Anti-fake grating, anti-fake trademark, hot stamping film and composite film | |
| KR101341072B1 (en) | Label for identifying genuine article comprising multiple nano structure and stereoscopic lens | |
| CN1666888B (en) | Optically variable security devices | |
| CN108027521B (en) | Optical product, master for making an optical product, and methods for making a master and an optical product | |
| JP4722353B2 (en) | Diffractive surface with color shift background | |
| JP4983948B2 (en) | Display body and article with display body | |
| CN104101926B (en) | Anti-fake grating, anti-fake brand, gilding film and composite film | |
| CN203981912U (en) | False proof grating, anti-false trademark, gilding film and composite membrane | |
| EP3210069A2 (en) | Optical products, masters for fabricating optical products, and methods for manufacturing masters and optical products | |
| CN103531086A (en) | Printing structure capable of displaying two-dimensional code through thermal alteration | |
| CN203503241U (en) | Thermal-change two-dimension code showing printing structure | |
| CN204086593U (en) | False proof grating, anti-false trademark, gilding film and composite membrane | |
| Lütolf et al. | Metallized gratings enable color effects and floating screen films by first‐order diffraction | |
| Wang et al. | Structural coloration of non-metallic surfaces using ductile-regime vibration-assisted ultraprecision texturing | |
| CN103177654B (en) | With the manufacture method of anti false film label of optical anti-counterfeiting film, antifalsification label and the security code generated by antifalsification label | |
| CN103177280B (en) | Radio frequency antifalsification label and Antiforge system | |
| CN102789740B (en) | Anti-counterfeiting film and product with same | |
| US9996781B2 (en) | Selectively optically readable data carrier | |
| Ma et al. | Facile preparation of robust microgrooves based photonic crystals film for anti-counterfeiting | |
| JP2014134739A (en) | Image display body and information medium | |
| EP2699951A1 (en) | Asymmetric optically effective surface relief microstructures and method of making them | |
| CN206115863U (en) | Holographic variable image two -dimensional code trace to source false proof mark and system | |
| Zhao et al. | Application of nanotechnology in anti-counterfeiting packaging | |
| RU2544144C1 (en) | Protective mark | |
| WO2022166894A1 (en) | Anti-counterfeiting element |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518132 Guangdong province Shenzhen Guangming Tianliao Avenue Juhui Industrial Park 1 Shenzhen University reflective material factory Patentee after: Xu Ping Patentee after: SHENZHEN SHENDA AURORA TECHNOLOGY Co.,Ltd. Address before: 518132 Guangdong province Shenzhen Guangming Tianliao Avenue Juhui Industrial Park 1 Shenzhen University reflective material factory Patentee before: Xu Ping Patentee before: Reflective Materials Manufactory Company SZU |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518132 Shenzhen University Reflective Material Factory, Building 1, Juhui Industrial Park, Tianliao Avenue, Guangming New District, Shenzhen, Guangdong Patentee after: Xu Ping Patentee after: Shenzhen Shenda Aurora Technology Co.,Ltd. Address before: 518132 Shenzhen University Reflective Material Factory, Building 1, Juhui Industrial Park, Tianliao Avenue, Guangming New District, Shenzhen, Guangdong Patentee before: Xu Ping Patentee before: SHENZHEN SHENDA AURORA TECHNOLOGY Co.,Ltd. |