CN110316457B - Printing electronic packaging device based on magnetic resonance wireless power supply technology and design method - Google Patents
Printing electronic packaging device based on magnetic resonance wireless power supply technology and design method Download PDFInfo
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- CN110316457B CN110316457B CN201910290278.XA CN201910290278A CN110316457B CN 110316457 B CN110316457 B CN 110316457B CN 201910290278 A CN201910290278 A CN 201910290278A CN 110316457 B CN110316457 B CN 110316457B
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- 238000005516 engineering process Methods 0.000 title claims abstract description 19
- 238000004100 electronic packaging Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000013461 design Methods 0.000 title claims abstract description 11
- 238000007639 printing Methods 0.000 title claims description 23
- 239000003990 capacitor Substances 0.000 claims abstract description 48
- 239000002985 plastic film Substances 0.000 claims abstract description 39
- 229920006255 plastic film Polymers 0.000 claims abstract description 39
- 238000004806 packaging method and process Methods 0.000 claims abstract description 35
- 238000012856 packing Methods 0.000 claims description 8
- 230000008719 thickening Effects 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/02—Internal fittings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
-
- H02J7/025—
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
Abstract
The invention discloses a printed electronic packaging device based on a magnetic resonance wireless power supply technology and a design method thereof, wherein the device comprises a printed coil, a printed circuit, a printed capacitor and an electric appliance which are arranged in a packaging box body; the printed coil, the printed capacitor and the electric appliance are mutually connected through the printed circuit, the printed coil and the printed capacitor are mutually connected in parallel to jointly form a receiving end of magnetic resonance wireless power supply, a transmitting end of the magnetic resonance wireless power supply is arranged outside the packaging box body, and the receiving end transmits the electric energy to the electric appliance by receiving the electric energy of the transmitting end, so that the electronic function of the packaging box body is realized; wherein: the printed coil, the printed circuit and the printed capacitor are printed on a piece of PET plastic film by conductive ink, and the PET plastic film is attached inside the packaging box body. The invention can realize electronization of the package without affecting the volume and weight of the package.
Description
Technical Field
The invention relates to the technical field of wireless power supply printing electronic packaging, in particular to a magnetic resonance wireless power supply technology-based printing electronic packaging device and a design method thereof.
Background
Magnetic resonance wireless charging technology, consisting of an energy transmitting device and an energy receiving device, which can exchange energy with each other when both devices are tuned to the same frequency, or resonate at a specific frequency. The carbon-based water-based conductive ink can conduct electricity through graphite particles in the ink, and the conductivity of the ink is close to that of copper, so that a flexible printed circuit can be realized.
When the commodity package is electrified to realize more functions, the cost is increased by arranging a battery in the package, potential safety hazards are brought to transportation, and meanwhile, the on-off of a control circuit is difficult to operate from the outside; the wires connected with the external power supply cause inconvenience in carrying and transportation.
The technical scheme of printing electronic package and wireless power supply on the package is lacked at present, and the existing wireless power supply mode occupies larger space volume and is not suitable for the technical field of package printing. When the package is printed, the problem that the existing electric element has overlarge volume and cannot meet the parameter requirement of design, such as a conventional capacitor, is difficult to apply to the printed electronic package.
Disclosure of Invention
The invention aims to solve the technical problem of providing a printing electronic packaging device based on a magnetic resonance wireless power supply technology and a design method aiming at the defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention provides a printed electronic packaging device based on a magnetic resonance wireless power supply technology, which comprises a printed coil, a printed circuit, a printed capacitor and an electric appliance, wherein the printed coil, the printed circuit, the printed capacitor and the electric appliance are arranged in a packaging box body; the printed coil, the printed capacitor and the electric appliance are mutually connected through the printed circuit, the printed coil and the printed capacitor are mutually connected in parallel to jointly form a receiving end of magnetic resonance wireless power supply, a transmitting end of the magnetic resonance wireless power supply is arranged outside the packaging box body, and the receiving end transmits the electric energy to the electric appliance by receiving the electric energy of the transmitting end, so that the electronic function of the packaging box body is realized; wherein: the printed coil, the printed circuit and the printed capacitor are printed on a piece of PET plastic film by conductive ink, and the PET plastic film is attached inside the packaging box body.
Furthermore, the printed capacitor comprises a front electrode plate and a back electrode plate which are respectively arranged on two sides of the PET plastic film; a plurality of holes are formed in the PET plastic film; the printed coil, the front electrode plate of the printed capacitor and the electrical appliance are connected through a printed circuit and are all arranged on the same side of the PET plastic film; the back side polar plate of the printed capacitor is arranged on the other side of the PET plastic film, the front side polar plate and the back side polar plate are connected with each other through a printed circuit penetrating through the hole, and the hole is filled with conductive ink.
Furthermore, the printed coil is a planar rectangular coil wound with a plurality of turns, and two ends of the printed coil are respectively positioned at the outer side of the printed coil and the central position of the printed coil; the outer side end of the printed coil is connected with the positive electrode plate of the printed capacitor; the number of the holes is three, and the three holes comprise a first hole, a second hole and a third hole; the connecting line of the central end of the printed coil passes through the first hole, and one end of the printed circuit passes through the second hole, so that the central end of the printed coil and the printed circuit realize jumper connection on the surface of the reverse side polar plate; the second hole and the third hole are connected through a printed circuit, and the printed circuit penetrates through the third hole, so that the reverse side pole plate and the printed circuit are connected with each other; the parallel connection of the printed capacitor and the printed coil with two poles respectively arranged on the two surfaces is realized.
Further, the conductive ink of the present invention is a carbon-based aqueous conductive ink.
Further, the fixing arrangement mode of the PET plastic film in the packaging box body comprises the following steps: the packaging box body is arranged on one surface of the packaging box body or a plurality of surfaces of the packaging box body; if the packaging box is arranged on a plurality of surfaces of the packaging box body, the printed circuits on the PET plastic films at the folding positions of two adjacent surfaces are provided with ink layer thickening positions through thickening treatment.
Further, the printed coil, the printed capacitor and the printed circuit of the present invention are processed by one-time printing.
The invention provides a design method of a printing electronic packaging device based on a magnetic resonance wireless power supply technology, which comprises the following steps:
inductance
Wherein a ═ a0-N(g+ω)，b＝b0-N(g+ω),
a0The dimension of the outline of the long side of the rectangular printed coil is the dimension; b0The outline size of the short side of the rectangular printed coil is obtained; a is the average length of the rectangular printed coil; b is the average width of the rectangular printed coil; omega is the width of the wire; g is the line spacing; t is the cross-sectional height; n is the number of turns of the coil; mu.s0For vacuum permeability, values of 4 π 10-10(ii) a The value of p depends on the actual coil processing technology and is between 1.75 and 1.85; the inductance unit obtained is Henry;
capacitance C ═ ε rS/4 π kd
Wherein, epsilonr is the dielectric constant of the plastic film, d is the thickness of the plastic film, S is the area of the printed capacitor, and k is the electrostatic force constant;
and 5, drawing by using plane software according to the calculated parameters, making a plate, printing, laminating and connecting an electric appliance.
The invention has the following beneficial effects: the printed electronic packaging device based on the magnetic resonance wireless power supply technology and the design method can realize electronization of commodity packaging, and simultaneously avoid potential safety hazards of built-in batteries and inconvenience caused by external power supply wires; compare coil and the circuit that the copper line is constituteed, electrically conductive ink printed circuit is almost totally flat, does not occupy any space inside the packing box, and weight is very light simultaneously, thereby can not increase too much weight for whole package because of wireless power supply module and hinder the transportation, in addition, electrically conductive ink printed circuit's cost is very cheap, can not let the packing increase too much cost when bringing the function for the packing.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic representation of the front side print of a printed plastic film of an embodiment of the present invention;
FIG. 2 is a schematic reverse side print of a printed plastic film according to an embodiment of the present invention;
FIG. 3 is a schematic view of the relative positions of a printed plastic film and a packaging box according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a printing method according to an embodiment of the present invention;
FIG. 5 is a schematic circuit diagram of an embodiment of the present invention;
in the figure: 1-printed coil, 2-front polar plate, 3-electrical appliance, 4-hole, 5-ink layer thickening position, 6-back polar plate, 7-packaging box body and 8-PET plastic film.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-3, the printed electronic packaging device based on the magnetic resonance wireless power supply technology of the embodiment of the present invention includes a printed coil 1, a printed circuit, a printed capacitor and an electrical appliance 3, which are arranged inside a packaging box 7; the printed coil 1, the printed capacitor and the electric appliance 3 are mutually connected through a printed circuit, the printed coil 1 and the printed capacitor are mutually connected in parallel to form a receiving end of magnetic resonance wireless power supply, a transmitting end of magnetic resonance wireless power supply is arranged outside the packaging box body 7, the receiving end transmits the electric energy to the electric appliance 3 by receiving the electric energy of the transmitting end, and the electronic function of the packaging box body 7 is realized; wherein: the printed coil 1, the printed circuit and the printed capacitor are all printed on a piece of PET plastic film 8 by conductive ink, and the PET plastic film 8 is attached inside the packaging box body 7.
The printed capacitor comprises a front electrode plate 2 and a back electrode plate 6 which are respectively arranged on two sides of a PET plastic film 8; a plurality of holes 4 are formed in the PET plastic film 8; the printed coil 1, the front electrode plate 2 of the printed capacitor and the electrical appliance 3 are connected through a printed circuit and are all arranged on the same side of the PET plastic film 8; the back plate 6 of the printed capacitor is arranged on the other side of the PET plastic film 8, the front plate 2 and the back plate 6 are connected with each other through a printed circuit penetrating through the hole 4, and the hole 4 is filled with conductive ink.
Because conventional electric capacity is too big, be not suitable for on the printed packaging, so need adopt printed capacitance, but the electric capacity of condenser needs the capacitance value big enough, needs great area, and designs on same side, and the area is big enough. Therefore, the invention adopts the mode of arranging the capacitors on the front and back surfaces, and can meet the requirement on the capacitance value on the premise of ensuring small volume.
The printed coil 1 is a planar rectangular coil wound with a plurality of circles, and two ends of the printed coil are respectively positioned at the outer side of the printed coil and the central position of the printed coil; the outer side end of the printed coil is connected with the front electrode plate 2 of the printed capacitor; the number of the holes 4 is three, and the holes comprise a first hole, a second hole and a third hole; the connecting line of the central end of the printed coil passes through the first hole, and one end of the printed circuit passes through the second hole, so that the central end of the printed coil and the printed circuit realize jumper connection on the surface of the reverse side polar plate 6; the second hole and the third hole are connected through a printed circuit, and the printed circuit penetrates through the third hole, so that the back side polar plate 6 and the printed circuit are connected with each other; the parallel connection of the printed capacitor and the printed coil 1 with two poles respectively arranged on two surfaces is realized.
The conductive ink is carbon-based water-based conductive ink.
The fixed mode of setting of PET plastic film 8 inside packing carton 7 includes: arranged on one face of the packing box body 7 or on a plurality of faces of the packing box body 7; when the printed circuit board is provided on a plurality of surfaces of the packaging box body 7, the printed circuit boards on the PET plastic films 8 at the folding positions of the two adjacent surfaces are provided with the ink layer thickened parts 5 through thickening treatment.
In the embodiment of the invention, as shown in fig. 1, the printing part on the front side and the printing part on the back side are overlapped and connected in a punching mode, and the holes are filled with ink in the printing process so as to realize communication. The thickness of the ink layer at the printed portion of the fold of the plastic film should be slightly thicker to prevent the problem of excessive local resistance due to the excessively thin ink layer at the fold.
The printed coil 1, the printed capacitor, and the printed circuit are formed by one-time printing.
As shown in fig. 4 and 5, the printed matter on the PET plastic film 8 is printed on the reverse side of the plastic film, and the printed capacitor is composed of a square on each of the front and back sides.
The design method of the printing electronic packaging device based on the magnetic resonance wireless power supply technology comprises the following steps:
inductance
Wherein a ═ a0-N(g+ω)，b＝b0-N(g+ω),
a0The dimension of the outline of the long side of the rectangular printed coil is the dimension; b0The outline size of the short side of the rectangular printed coil is obtained; a is the average length of the rectangular printed coil; b is the average width of the rectangular printed coil; omega is the width of the wire; g is the line spacing; t is the cross-sectional height; n is the number of turns of the coil; mu.s0For vacuum permeability, values of 4 π 10-10(ii) a The value of p depends on the actual coil processing technology and is between 1.75 and 1.85; the inductance unit obtained is Henry;
capacitance C ═ ε rS/4 π kd
Wherein, epsilonr is the dielectric constant of the plastic film, d is the thickness of the plastic film, S is the area of the printed capacitor, and k is the electrostatic force constant;
and 5, drawing by using plane software according to the calculated parameters, making a plate, printing, laminating and connecting an electric appliance.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (5)
1. A printed electronic packaging device based on a magnetic resonance wireless power supply technology is characterized by comprising a printed coil (1), a printed circuit, a printed capacitor and an electric appliance (3), wherein the printed coil (1), the printed circuit, the printed capacitor and the electric appliance are arranged in a packaging box body (7); the printed coil (1), the printed capacitor and the electric appliance (3) are mutually connected through a printed circuit, the printed coil (1) and the printed capacitor are mutually connected in parallel to jointly form a receiving end of magnetic resonance wireless power supply, a transmitting end of the magnetic resonance wireless power supply is arranged outside the packaging box body (7), the receiving end receives electric energy of the transmitting end and transmits the electric energy to the electric appliance (3), and the electronic function of the packaging box body (7) is realized; wherein: the printed coil (1), the printed circuit and the printed capacitor are printed on a PET plastic film (8) by conductive ink, and the PET plastic film (8) is attached inside the packaging box body (7);
the printed capacitor comprises a front electrode plate (2) and a back electrode plate (6) which are respectively arranged on two sides of a PET plastic film (8); a plurality of holes (4) are formed in the PET plastic film (8); the printed coil (1), the front polar plate (2) of the printed capacitor and the electrical appliance (3) are connected through a printed circuit and are all arranged on the same side of the PET plastic film (8); a back side polar plate (6) of the printed capacitor is arranged on the other side of the PET plastic film (8), the front side polar plate (2) and the back side polar plate (6) are connected with each other through a printed circuit penetrating through the hole (4), and the hole (4) is filled with conductive ink;
the printing coil (1) is a plane rectangular coil wound with a plurality of circles, and two ends of the printing coil are respectively positioned at the outer side of the printing coil and the central position of the printing coil; the outer side end of the printed coil is connected with a front electrode plate (2) of the printed capacitor; three holes (4) are arranged, and comprise a first hole, a second hole and a third hole; the connecting line of the central end of the printed coil passes through the first hole, and one end of the printed circuit passes through the second hole, so that the central end of the printed coil and the printed circuit realize jumper connection on the surface of the reverse side polar plate (6); the second hole and the third hole are connected through a printed circuit, and the printed circuit penetrates through the third hole, so that the back side polar plate (6) is connected with the printed circuit; the parallel connection of the printed capacitor and the printed coil (1) with two poles respectively arranged on the two surfaces is realized.
2. A printed electronic packaging device based on magnetic resonance wireless power supply technology according to claim 1, characterized in that the conductive ink is carbon-based aqueous conductive ink.
3. The printed electronic packaging device based on the magnetic resonance wireless power supply technology as claimed in claim 1, wherein the fixed arrangement mode of the PET plastic film (8) inside the packaging box body (7) comprises: is arranged on one surface of the packing box body (7) or on a plurality of surfaces of the packing box body (7); when the printed circuit board is arranged on a plurality of surfaces of the packaging box body (7), the printed circuit on the PET plastic film (8) at the folding positions of two adjacent surfaces is provided with an ink layer thickening part (5) through thickening treatment.
4. The printed electronic packaging device based on the magnetic resonance wireless power supply technology according to claim 1, characterized in that the printed coil (1), the printed capacitor and the printed circuit are processed by one-time printing.
5. A design method of a printed electronic packaging device based on magnetic resonance wireless power supply technology as claimed in claim 1, characterized in that the method comprises the following steps:
step 1, determining an inductance value L of a printed coil and a capacitance value C of a printed capacitor according to the working frequency of magnetic resonance wireless power supply;
step 2, determining the outer diameter of the printed coil according to the size of the packaging box body;
step 3, calculating the number of turns, the line width and the line spacing of the printed coil, and determining the shape and the size of the printed capacitor; the calculation formula is as follows:
inductance
Wherein a ═ a0-N(g+ω)，b＝b0-N(g+ω),
a0The dimension of the outline of the long side of the rectangular printed coil is the dimension; b0The outline size of the short side of the rectangular printed coil is obtained; a is the average length of the rectangular printed coil; b is the average width of the rectangular printed coil; omega is the width of the wire; g is the line spacing; t is the cross-sectional height; n is the number of turns of the coil; mu.s0For vacuum permeability, values of 4 π 10-10(ii) a The value of p depends on the actual coil processing technology and is between 1.75 and 1.85; the inductance unit obtained is Henry;
capacitance C ═ ε rS/4 π kd
Wherein, epsilonr is the dielectric constant of the plastic film, d is the thickness of the plastic film, S is the area of the printed capacitor, and k is the electrostatic force constant;
step 4, determining the shape and size of the printed circuit according to the size of the packaging box body;
and 5, drawing by using plane software according to the calculated parameters, making a plate, printing, laminating and connecting an electric appliance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910290278.XA CN110316457B (en) | 2019-04-11 | 2019-04-11 | Printing electronic packaging device based on magnetic resonance wireless power supply technology and design method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910290278.XA CN110316457B (en) | 2019-04-11 | 2019-04-11 | Printing electronic packaging device based on magnetic resonance wireless power supply technology and design method |
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| CN110316457A CN110316457A (en) | 2019-10-11 |
| CN110316457B true CN110316457B (en) | 2021-01-26 |
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| CN201910290278.XA Active CN110316457B (en) | 2019-04-11 | 2019-04-11 | Printing electronic packaging device based on magnetic resonance wireless power supply technology and design method |
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| CN110839096B (en) | 2019-08-30 | 2022-06-28 | 华为技术有限公司 | Touch method of equipment with folding screen and folding screen equipment |
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| JPS6427305A (en) * | 1987-07-22 | 1989-01-30 | Murata Manufacturing Co | Lc filter |
| CN102348327A (en) * | 2010-07-29 | 2012-02-08 | 国琏电子（上海）有限公司 | Printed circuit board |
| CN103023160A (en) * | 2012-12-19 | 2013-04-03 | 哈尔滨工业大学 | Wireless power supply system used for printed circuit boards |
| CN104902399A (en) * | 2015-06-16 | 2015-09-09 | 武汉大学 | Printing type flexible film speaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3683245A (en) * | 1971-12-01 | 1972-08-08 | Du Pont | Hermetic printed capacitor |
| TWI578237B (en) * | 2010-04-08 | 2017-04-11 | 通路實業集團國際公司 | Point of sale inductive systems and methods |
| CA2825322A1 (en) * | 2013-08-28 | 2015-02-28 | Hakam Ziadeh | Wallet-integrated power supply device |
| TWI681590B (en) * | 2014-08-13 | 2020-01-01 | 瑞士商菲利浦莫里斯製品股份有限公司 | Container of consumer goods, system for operating an electronic device provided on a container of consumer goods and method of forming a container of consumer goods |
| CN206323221U (en) * | 2016-12-23 | 2017-07-11 | 深圳英伦科技股份有限公司 | Wireless charging capacitance type minitype power supply, electronic shelf label and miniature electronic devices |
| CN107546035A (en) * | 2017-09-11 | 2018-01-05 | 北京三雄科技公司 | High-precision Vacuum printing capacitor and its application |
-
2019
- 2019-04-11 CN CN201910290278.XA patent/CN110316457B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6427305A (en) * | 1987-07-22 | 1989-01-30 | Murata Manufacturing Co | Lc filter |
| CN102348327A (en) * | 2010-07-29 | 2012-02-08 | 国琏电子（上海）有限公司 | Printed circuit board |
| CN103023160A (en) * | 2012-12-19 | 2013-04-03 | 哈尔滨工业大学 | Wireless power supply system used for printed circuit boards |
| CN104902399A (en) * | 2015-06-16 | 2015-09-09 | 武汉大学 | Printing type flexible film speaker |
Non-Patent Citations (1)
| Title |
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| 印刷电子在智能包装上的应用——智能温度传感器;王立霞,丁宁;《印刷质量与标准化》;20131115(第11期);第8-10页 * |
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Effective date of registration: 20210813 Address after: 443000 Qingdao Road, Dongshan Development Zone, Yichang, Hubei Patentee after: HUBEI GOLDEN THREE GORGES PRINTING INDUSTRY Co.,Ltd. Address before: 430072 No. 299 Bayi Road, Wuchang District, Hubei, Wuhan Patentee before: WUHAN University |
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