CN213405637U - Ultraviolet sterilization kettle - Google Patents
Ultraviolet sterilization kettle Download PDFInfo
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- CN213405637U CN213405637U CN202022444524.3U CN202022444524U CN213405637U CN 213405637 U CN213405637 U CN 213405637U CN 202022444524 U CN202022444524 U CN 202022444524U CN 213405637 U CN213405637 U CN 213405637U
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- lamp tube
- filter element
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Abstract
The utility model discloses an ultraviolet sterilization kettle, which comprises a kettle body and a kettle cover arranged on the kettle body, wherein the bottom of the kettle cover is provided with a concave mirror and an ultraviolet lamp tube, one end of the ultraviolet lamp tube is positioned at the center of the concave mirror, and the other end of the ultraviolet lamp tube extends to the bottom of the kettle body; the kettle cover is also provided with a battery and a switch, and the switch is electrically connected with the battery and the ultraviolet lamp tube respectively. The sterilizing effect is good. The utility model discloses be applied to the articles for daily use field.
Description
Technical Field
The utility model relates to the field of living appliances, in particular to an ultraviolet sterilization kettle.
Background
A water cup or a water jug is a daily necessity with wide application, and is generally used for containing water or other liquid. In order to drink clean water at any time, people generally install an ultraviolet lamp on a water cup for disinfection.
In the prior art, an ultraviolet lamp tube of an ultraviolet kettle is usually arranged on a kettle cover, and the light emitted by ultraviolet lamp light is diffused too much, so that the sterilization and disinfection effects are poor.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
An ultraviolet sterilization kettle has good sterilization effect.
(II) technical scheme
In order to solve the technical problem, the utility model provides an ultraviolet sterilization kettle, which comprises a kettle body and a kettle cover arranged on the kettle body, wherein the bottom of the kettle cover is provided with a concave mirror and an ultraviolet lamp tube, the ultraviolet lamp tube is coated with a quartz glass sheet, one end of the ultraviolet lamp tube is positioned in the center of the concave mirror, and the other end of the ultraviolet lamp tube extends to the bottom of the kettle body;
the kettle cover is also provided with a battery and a switch, and the switch is electrically connected with the battery and the ultraviolet lamp tube respectively.
In a further improvement, the bottom of the kettle cover is also provided with a filter element cylinder, the filter element cylinder is sleeved outside the ultraviolet lamp tube and is provided with a plurality of filter holes, and the filter element cylinder extends to the bottom of the kettle body;
the filter holes comprise first filter holes distributed along the circumferential surface of the filter element cylinder, the first filter holes are in a strip shape, and the length direction of the first filter holes is arranged along the axial direction of the filter element cylinder.
In a further improvement, the filter holes further comprise second filter holes, the aperture of each second filter hole is smaller than the width of each first filter hole, and the second filter holes are formed in the bottom of the filter element cylinder.
In a further improvement, the bottom of the filter element cylinder is hemispherical, a third filter hole is further formed in the filter element cylinder, the aperture of the third filter hole is larger than that of the second filter hole, and the aperture of the third filter hole is smaller than the width of the first filter hole.
Further improved, the pot lid still is equipped with function PCB board and fluorescent tube PCB board that the electrical property links to each other, be equipped with the USB interface on the function PCB board, the battery is rechargeable battery, switch respectively with function PCB board electrical property link to each other, ultraviolet ray fluorescent tube and fluorescent tube PCB board electrical property link to each other.
In a further improvement, the kettle cover comprises a cover body, a shell is sleeved outside the cover body, a filter element support is arranged on the cover body, a lamp tube fixing block and a handle are arranged on the filter element support, the filter element cylinder is detachably connected with the filter element support, and the ultraviolet lamp tube is connected to the filter element support through the lamp tube fixing block;
the rechargeable battery, the functional PCB and the lamp tube PCB are all arranged on the upper cover, a first through hole is formed in the middle of the upper cover, the switch is a key, and the key is movably arranged in the first through hole.
In a further improvement, the kettle cover comprises a cover body, a filter element support is arranged at the bottom of the cover body, a lamp tube fixing block is arranged on the filter element support, the filter element cylinder is detachably connected with the filter element support, the ultraviolet lamp tube is connected to the filter element support through the lamp tube fixing block, a second through hole is formed in the cover body, the switch is a button, and the button is movably arranged in the second through hole;
the cover body is provided with a first drinking water hole, a second drinking water hole, an exhaust hole, a dust cover, a suction nozzle and a suction pipe, one end of the dust cover is hinged to the cover body, the other end of the dust cover is connected to the cover body in a buckling mode, and the dust cover can be movably covered on the first drinking water hole;
one end of the suction pipe is connected to the second drinking hole, the other end of the suction pipe extends to the bottom of the kettle body, the suction nozzle is hinged to the second drinking hole, and the suction nozzle is movably connected with the second drinking hole in a butt joint mode.
Further improved, exhaust valve is embedded to be equipped with in the exhaust hole, be equipped with the end cap on the suction nozzle, exhaust valve is movably plugged up to the end cap.
In a further improvement, the other end of the dust cover is provided with a hook;
the novel cap is characterized in that the cap body is provided with a sliding cavity towards the side part of the cap body, a third through hole is formed in one side of the sliding cavity towards the dust cover, a button is arranged in the sliding cavity in a sliding mode, an elastic element is arranged between the button and the sliding cavity in a supporting mode, a hanging hole is formed in one side of the button towards the top of the cap body, and the hook penetrates through the third through hole and is detachably connected with the hanging hole.
Further improved, still be equipped with the fourth through-hole on the sliding cavity, the button lateral part still is equipped with the snap-fastener, be equipped with the lug on the snap-fastener, lug and fourth through-hole buckle are connected.
(III) advantageous effects
In the ultraviolet sterilization kettle of the utility model, the quartz glass sheet is used for preventing the ultraviolet lamp tube from water; the battery is used for supplying power to the ultraviolet lamp tube, and the switch is used for controlling the opening and closing of the ultraviolet lamp tube. The ultraviolet lamp tube extends to the bottom of the kettle body, so that the ultraviolet lamp tube can comprehensively and uniformly sterilize and disinfect water or beverage in the kettle body, and the sterilization and disinfection effect is good. Meanwhile, the concave mirror has the effects of light condensation and light reflection, and can collect and transmit light emitted by the ultraviolet lamp tube to the middle part and the bottom of the kettle body, so that the sterilization and disinfection effects of the ultraviolet lamp tube are better, and the efficiency is better.
Drawings
FIG. 1 is a perspective view of an ultraviolet sterilization kettle according to an embodiment of the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a diagram illustrating a connection relationship between the cover, the UV tube and the filter element cartridge according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating a connection relationship between the cap, the UV tube and the straw according to an embodiment of the present invention;
fig. 5 is an exploded view of a lid according to an embodiment of the present invention;
fig. 6 is a cross-sectional view of a pot lid according to an embodiment of the present invention (the suction nozzle is closed, and the plug blocks the exhaust valve);
fig. 7 is a cross-sectional view of a pot lid according to an embodiment of the present invention (the suction nozzle is open, and the plug does not block the exhaust valve);
FIG. 8 is a perspective view of an ultraviolet sterilization kettle according to another embodiment of the present invention;
FIG. 9 is an exploded view of FIG. 8;
FIG. 10 is a view showing the connection relationship between the cover, the UV tube and the cartridge according to another embodiment of the present invention;
fig. 11 is a diagram illustrating a connection relationship between a kettle lid and an ultraviolet lamp according to another embodiment of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 11, an ultraviolet sterilization kettle comprises a kettle body 1 and a kettle lid 2 arranged on the kettle body 1, wherein a concave mirror 9 and an ultraviolet lamp tube 4 are arranged at the bottom of the kettle lid 2, a quartz glass sheet is coated outside the ultraviolet lamp tube 4, one end of the ultraviolet lamp tube 4 is positioned at the center of the concave mirror 9, and the other end of the ultraviolet lamp tube 4 extends to the bottom of the kettle body 1;
the kettle cover 2 is also provided with a battery 21 and a switch 22, and the switch 22 is electrically connected with the battery 21 and the ultraviolet lamp tube 4 respectively.
In the ultraviolet sterilization kettle of the embodiment, the quartz glass sheet is used for preventing the ultraviolet lamp tube 4 from water; the battery 21 is used for supplying power to the ultraviolet lamp tube 4, and the switch 22 is used for controlling the opening and closing of the ultraviolet lamp tube 4. The ultraviolet lamp tube 4 extends to the bottom of the kettle body 1, so that the ultraviolet lamp tube 4 can comprehensively and uniformly sterilize and disinfect the water or beverage in the kettle body 1, and the sterilization and disinfection effect is good. Meanwhile, the concave mirror 9 has the effects of light condensation and light reflection, and can collect and transmit the light emitted by the ultraviolet lamp tube 4 to the middle part and the bottom of the kettle body 1, so that the sterilization and disinfection effects of the ultraviolet lamp tube are better, and the efficiency is better.
In this embodiment, as a further improvement of the above technical solution, the bottom of the pot lid 2 is further provided with a filter element cylinder 3, the filter element cylinder 3 is sleeved outside the ultraviolet lamp tube 4, and the filter element cylinder 3 is provided with a plurality of filter holes 5. The filtering holes 5 comprise first filtering holes 51 distributed along the circumferential surface of the filter element cylinder 3, the first filtering holes 51 are strip-shaped, and the length direction of the first filtering holes 51 is arranged along the axial direction of the filter element cylinder 3. The filter element cylinder 3 can soak tea or fruits, the filter holes 5 in the filter element cylinder 3 have the function of filtering fruit residues or tea, and can also enable ultraviolet rays emitted by the ultraviolet lamp tube 4 to penetrate through the filter element cylinder, so that water or beverages in the kettle body can be sterilized, the filter element cylinder 3 also has a certain protection function on the ultraviolet lamp tube 4, and the ultraviolet lamp tube 4 is prevented from being damaged by accidents. The bar-shaped first filtering holes 51 have better filtering effect and light transmission effect. For example, the bar-shaped first filter frame 51 can filter smaller pieces of tea leaves or pomace than the circular first filter frame 51 on the premise that the hole areas of the first filter holes 51 are equal.
In this embodiment, as a further improvement of the above technical solution, the filtering holes 5 further include second filtering holes 52, the aperture of the second filtering holes 52 is smaller than the width of the first filtering holes 51, and the second filtering holes 52 are disposed at the bottom of the filter element cylinder 3. Specifically, the second filtering holes 52 are circular, and the second filtering holes 52 with smaller hole diameters can enable tea leaves or fruit residues to be deposited at the bottom of the filter element cylinder 3 and not to fall into the kettle body 1.
In this embodiment, as a further improvement of the above technical solution, the bottom of the filter element cylinder 3 is hemispherical, the filter element cylinder 3 is further provided with a third filtering hole 53, an aperture of the third filtering hole 53 is larger than an aperture of the second filtering hole 52, and an aperture of the third filtering hole 53 is smaller than a width of the first filtering hole 51. When the tea or the fruit residues are deposited at the bottom of the filter element cylinder 3, the second filter hole with the smallest aperture bears the largest pressure, and the first filter hole 53 with the larger aperture bears the smaller pressure, so that the tea or the fruit residues cannot overflow. Meanwhile, the light transmission area of ultraviolet rays can be increased through the third filtering holes 53, and filtering channels are added, so that filtering is facilitated.
In this embodiment, as a further improvement of the above technical solution, the pot lid 2 is further provided with a functional PCB 23 and a lamp tube PCB 24, which are electrically connected to each other, the functional PCB 23 is provided with a USB interface 231, the battery 21 is a rechargeable battery, the rechargeable battery and the switch 22 are electrically connected to the functional PCB 23, and the ultraviolet lamp tube 4 is electrically connected to the lamp tube PCB 24. PCB is short for printed circuit board. The lamp tube PCB 24 and the functional PCB 23 integrate the circuits, and simplify the structure and the circuit. The rechargeable battery can be recycled, and is green and environment-friendly; can charge through USB interface 231, convenient to use.
In this embodiment, as a further improvement of the above technical solution, the pot lid 2 includes a lid body 25, a housing 26 is sleeved outside the lid body 25, the lid body 25 is provided with a filter element support 6, the filter element support 6 is provided with a lamp tube fixing block 61 and a handle 62, the filter element cylinder 3 is detachably connected to the filter element support 6, and the ultraviolet lamp tube 4 is connected to the filter element support 6 through the lamp tube fixing block 61;
the top of the housing 26 is provided with an upper cover 27, the rechargeable battery, the functional PCB 23 and the lamp tube PCB 24 are all arranged on the upper cover 27, the middle of the upper cover 27 is provided with a first through hole 271, the switch 22 is a key, and the key is movably arranged in the first through hole 271. The housing 26 has a supporting and protecting function for the cover body 25 and the components thereon; the lamp tube fixing block 61 is used for fixing the ultraviolet lamp tube 4; the handle 62 is used for lifting the filter element bracket 6, so that the use and the operation are convenient; the filter element support 6 is used for fixing the filter element cylinder 3, the upper cover 27 has a protection function on parts in the shell 26, only the key is exposed, and the ultraviolet lamp tube 4 can be opened or closed through the key.
In the embodiment, another embodiment of the pot lid 2 is further provided, wherein the pot lid 2 includes a lid body 25, a filter element support 6 is arranged at the bottom of the lid body 25, a lamp tube fixing block 61 is arranged on the filter element support 6, the filter element cylinder 3 is detachably connected with the filter element support 6, the ultraviolet lamp tube 4 is connected to the filter element support 6 through the lamp tube fixing block 61, a second through hole 251 is arranged on the lid body 25, the switch 22 is a key, and the key is movably arranged in the second through hole 251;
the cover body 25 is provided with a first drinking hole 71, a second drinking hole 72, an exhaust hole 73, a dust cover 74, a suction nozzle 75 and a suction pipe 76, one end of the dust cover 74 is hinged to the cover body 25, the other end of the dust cover 74 is connected to the cover body 25 in a buckling manner, and the dust cover 74 is movably covered on the first drinking hole 71;
one end of the suction pipe 76 is connected to the second drinking water hole 72, the other end of the suction pipe 76 extends to the bottom of the kettle body 1, the suction nozzle 75 is hinged to the second drinking water hole 72, and the suction nozzle 75 is movably connected with the second drinking water hole 72 in a butt joint mode. When the dust cover 74 is opened, water can be poured through the first drinking water hole 71; when the dust cover 74 is rotated to cover the first drinking water hole 71, the first drinking water hole 71 can be closed, and the use is convenient. Meanwhile, the suction nozzle 75 can be rotated to enable the suction nozzle 75 to be in butt joint with the second drinking water hole 72, water or beverage in the kettle body 1 can be sucked out sequentially through the suction pipe 76, the second drinking water hole 72 and the suction nozzle 75, and the exhaust hole 73 is used for balancing air pressure in the kettle body 1 and air pressure externally connected with the kettle body 1, so that the water or beverage cup in the kettle body 1 can be sucked out smoothly; therefore, the kettle cover 2 of the embodiment has two water absorption modes, can be used by different people, and is convenient to use.
In this embodiment, as a further improvement of the above technical solution, an exhaust valve 731 is embedded in the exhaust hole 73, and a plug 751 is arranged on the suction nozzle 75, wherein the plug 751 can movably block the exhaust valve 731. When the suction nozzle 75 is not used for sucking water or beverage, the plug 751 can block the exhaust valve 731 so that dust does not fall into the kettle body 1. The exhaust valve 731 has a better effect of balancing air pressure with respect to the exhaust hole 73, and the sealing between the exhaust valve 731 and the plug 751 is better.
In this embodiment, as a further improvement of the above technical solution, a hook 81 is provided at the other end of the dust cover 74;
the cap body 25 is provided with a sliding cavity 82 which is opened towards the side portion of the cap body 25, a third through hole 821 is arranged on one side of the sliding cavity 82 towards the dust cover 74, a button 83 is arranged in the sliding cavity 82 in a sliding mode, an elastic element 84 is arranged between the button 83 and the sliding cavity 82 in a supporting mode, a hanging hole 831 is arranged on one side of the button 83 towards the top portion of the cap body 25, and the hook 81 penetrates through the third through hole 821 and is detachably connected with the hanging hole 831. When the dust cover 4 needs to be opened, the button 83 is pressed down to separate the hook 81 from the hanging buckle 831, the other end of the dust cover 74 can rotate, and the dust cover 74 can rotate away from the first drinking water hole 71; when the dust cover 74 is required to cover the first drinking water hole 71, the dust cover 74 is rotated to make the hook 81 pass through the third through hole 821 and then be clamped on the hanging hole 831, and due to the action of the elastic element 84, the hanging hole 831 will support the hook 81, so that the hook 81 will not be separated. The slide cavity 82 is used to provide a slide for the button 83 while providing some protection for the button 83 to prevent the button 83 from being mispressed or damaged.
In this embodiment, as a further improvement of the above technical solution, a fourth through hole 822 is further provided on the sliding cavity 82, a snap 832 is further provided on a side of the button 83, a protrusion 833 is provided on the snap 832, and the protrusion 833 and the fourth through hole 822 are connected by snap-fit. When button 832 is pressed, button 83 is pushed down toward the bottom of slide 82; when the lug 833 is clamped into the fourth through hole 822, the button 83 can not be pressed down towards the bottom of the sliding cavity 82, and the elastic element 84 can not push the button 83 out of the sliding cavity 82, so that the button 83 has double locking protection effects, and the button locking device is convenient to operate, safe and reliable.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An ultraviolet sterilization kettle is characterized by comprising a kettle body and a kettle cover arranged on the kettle body, wherein a concave mirror and an ultraviolet lamp tube are arranged at the bottom of the kettle cover, one end of the ultraviolet lamp tube is positioned at the center of the concave mirror, and the other end of the ultraviolet lamp tube extends to the bottom of the kettle body;
the kettle cover is also provided with a battery and a switch, and the switch is electrically connected with the battery and the ultraviolet lamp tube respectively.
2. The ultraviolet sterilization kettle as claimed in claim 1, wherein a filter element cylinder is further arranged at the bottom of the kettle cover, the filter element cylinder is sleeved outside the ultraviolet lamp tube, and a plurality of filter holes are arranged on the filter element cylinder;
the filter holes comprise first filter holes distributed along the circumferential surface of the filter element cylinder, the first filter holes are in a strip shape, and the length direction of the first filter holes is arranged along the axial direction of the filter element cylinder.
3. The uv sterilizing kettle according to claim 2, wherein the filtering holes further comprise second filtering holes, the diameter of the second filtering holes is smaller than the width of the first filtering holes, and the second filtering holes are formed at the bottom of the filter element cylinder.
4. The ultraviolet sterilization kettle as recited in claim 3, wherein the bottom of the filter element cylinder is hemispherical, the filter element cylinder is further provided with a third filter hole, the aperture of the third filter hole is larger than that of the second filter hole, and the aperture of the third filter hole is smaller than the width of the first filter hole.
5. The UV sterilization kettle according to any one of claims 2 to 4, wherein the kettle lid further comprises a functional PCB and a lamp tube PCB electrically connected to each other, the functional PCB is provided with a USB interface, the battery is a rechargeable battery, the rechargeable battery and the switch are electrically connected to the functional PCB, respectively, and the UV lamp tube is electrically connected to the lamp tube PCB.
6. The ultraviolet sterilization kettle as recited in claim 5, wherein said kettle cover comprises a cover body, said cover body is externally covered with a housing, said cover body is provided with a filter element support, said filter element support is provided with a lamp tube fixing block and a handle, said filter element cylinder and said filter element support are detachably connected, said ultraviolet lamp tube is connected to said filter element support through said lamp tube fixing block;
the rechargeable battery, the functional PCB and the lamp tube PCB are all arranged on the upper cover, a first through hole is formed in the middle of the upper cover, the switch is a key, and the key is movably arranged in the first through hole.
7. The uv sterilizing kettle according to claim 5, wherein the kettle cover comprises a cover body, a filter element bracket is arranged at the bottom of the cover body, a lamp tube fixing block is arranged on the filter element bracket, the filter element cylinder is detachably connected with the filter element bracket, the uv lamp tube is connected with the filter element bracket through the lamp tube fixing block, a second through hole is arranged on the cover body, the switch is a button, and the button is movably arranged in the second through hole;
the cover body is provided with a first drinking water hole, a second drinking water hole, an exhaust hole, a dust cover, a suction nozzle and a suction pipe, one end of the dust cover is hinged to the cover body, the other end of the dust cover is connected to the cover body in a buckling mode, and the dust cover can be movably covered on the first drinking water hole;
one end of the suction pipe is connected to the second drinking hole, the other end of the suction pipe extends to the bottom of the kettle body, the suction nozzle is hinged to the second drinking hole, and the suction nozzle is movably connected with the second drinking hole in a butt joint mode.
8. The ultraviolet sterilization kettle as recited in claim 7, wherein an exhaust valve is embedded in the exhaust hole, a plug is arranged on the suction nozzle, and the plug can movably plug the exhaust valve.
9. The ultraviolet sterilization kettle as recited in claim 7, wherein a hook is provided at the other end of the dust cover;
the novel cap is characterized in that the cap body is provided with a sliding cavity towards the side part of the cap body, a third through hole is formed in one side of the sliding cavity towards the dust cover, a button is arranged in the sliding cavity in a sliding mode, an elastic element is arranged between the button and the sliding cavity in a supporting mode, a hanging hole is formed in one side of the button towards the top of the cap body, and the hook penetrates through the third through hole and is detachably connected with the hanging hole.
10. The uv sterilizing kettle according to claim 9, wherein a fourth through hole is further formed on the sliding cavity, a snap fastener is further formed on the side of the button, a convex block is formed on the snap fastener, and the convex block is connected with the fourth through hole in a snap-fit manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022444524.3U CN213405637U (en) | 2020-10-28 | 2020-10-28 | Ultraviolet sterilization kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022444524.3U CN213405637U (en) | 2020-10-28 | 2020-10-28 | Ultraviolet sterilization kettle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213405637U true CN213405637U (en) | 2021-06-11 |
Family
ID=76248480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022444524.3U Active CN213405637U (en) | 2020-10-28 | 2020-10-28 | Ultraviolet sterilization kettle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213405637U (en) |
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2020
- 2020-10-28 CN CN202022444524.3U patent/CN213405637U/en active Active
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Address after: 518000 No.32, niumianling new village, sifangpu community, Pingdi street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shen Zhen Xin Yue Tang Plastic & Hardware Co.,Ltd. Address before: 518000 No.32, niumianling new village, sifangpu community, Pingdi street, Longgang District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Xinyuetang Plastic&Hardware Co.,Ltd. |