CN107320883B - Bubble ball for fire control and extinguishment - Google Patents
Bubble ball for fire control and extinguishment Download PDFInfo
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- CN107320883B CN107320883B CN201710773892.2A CN201710773892A CN107320883B CN 107320883 B CN107320883 B CN 107320883B CN 201710773892 A CN201710773892 A CN 201710773892A CN 107320883 B CN107320883 B CN 107320883B
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- membrane
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- bubble ball
- ball
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- 239000012528 membrane Substances 0.000 claims abstract description 121
- 239000000843 powder Substances 0.000 claims abstract description 34
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 239000007938 effervescent tablet Substances 0.000 claims abstract description 10
- 210000002808 connective tissue Anatomy 0.000 claims abstract description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 64
- 239000001569 carbon dioxide Substances 0.000 claims description 32
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 32
- 238000007789 sealing Methods 0.000 claims description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- 239000002985 plastic film Substances 0.000 claims description 4
- 229920006255 plastic film Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 claims description 3
- 230000002745 absorbent Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 34
- 230000000694 effects Effects 0.000 abstract description 12
- 239000007789 gas Substances 0.000 description 27
- 238000000926 separation method Methods 0.000 description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 10
- 229910052760 oxygen Inorganic materials 0.000 description 10
- 239000001301 oxygen Substances 0.000 description 10
- 241001391944 Commicarpus scandens Species 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 201000010099 disease Diseases 0.000 description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 210000000633 nuclear envelope Anatomy 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004901 spalling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing Compositions (AREA)
Abstract
The invention discloses a bubble ball for fire fighting, belonging to the field of fire fighting. The utility model provides a fire control is bubble ball for putting out a fire, includes bubble ball adventitia, bubble ball intraadventitia intussuseption is filled with gas, be equipped with the shrivelled kernel in the bubble ball adventitia, the shrivelled kernel includes pellicle, divider membrane and seal membrane, the pellicle is connected to one side of divider membrane, the seal membrane is connected to the opposite side of divider membrane, it has the effervescent tablet powder to fill between pellicle and the divider membrane, it has ABC dry powder fire extinguishing agent to fill between seal membrane and the divider membrane. The dry powder fire extinguisher can be combined with a fire truck, when a super-large fire disaster occurs, the fire-fighting air bubble ball is added in the water tank of the fire truck, so that the range of the sprayed water column is far, but the impact force is small, the dry powder fire extinguishing agent can be brought to the position of an object on fire, the fire extinguishing effect is improved, the fire behavior is controlled in the shortest time, and the loss is reduced to the maximum extent.
Description
Technical Field
The invention relates to the field of fire fighting, in particular to a bubble ball for fire fighting.
Background
The dry powder fire extinguisher is filled with dry powder fire extinguishing agent such as ammonium phosphate, etc., which has easy flowability and drying property and consists of inorganic salt and crushed and dried additive.
In the fire extinguishing process of the fire fighting truck, a fire fighter can use the fire fighting gun to spray water columns to a fire scene to extinguish the fire of a large fire scene, the sprayed water columns are far, but the impact force is large, secondary damage is easily caused to objects on fire, the water mobility is strong, when the fire fighter encounters an extra-large fire, the temperature is high, after water sprayed on the surface of a comburent is quickly evaporated, the comburent is re-combusted, the fire extinguishing effect is poor, the fire behavior cannot be effectively controlled, and serious casualties and property loss are caused.
The principle of dry powder fire extinguisher is that substances such as NaHCO3 and the like are decomposed or react with other substances, for example, 3NaOH +2AlCl3+3NaHCO3= = = = = = =2al (oh)3 ↓ +3CO2 ↓ +6 NaCl.
After the reaction, the generated carbon dioxide and solid particles such as aluminum hydroxide, sodium chloride, partial sulfate, phosphate and the like isolate the air on the surface of the combustion object, thereby realizing the effect of fire extinguishing. In addition, the chemical reactions absorb heat, and the effect of reducing the temperature can be achieved.
Disclosure of Invention
1. Technical problem to be solved
The invention aims to provide a fire-fighting air bubble ball, which can realize the combination of a dry powder fire extinguisher and a fire truck, and when a super-large fire occurs, the fire-fighting air bubble ball is added into a water tank of the fire truck, so that the range of a sprayed water column is far, but the impact force is small, the dry powder fire extinguishing agent can be brought to an object on fire, the fire extinguishing effect is improved, the fire behavior is controlled in the shortest time, and the loss is reduced to the greatest extent.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
The utility model provides a fire control is bubble ball for putting out a fire, includes bubble ball adventitia, bubble ball intraadventitia intussuseption is filled with gas, be equipped with the shrivelled kernel in the bubble ball adventitia, the shrivelled kernel includes pellicle, divider membrane and seal membrane, the pellicle is connected to one side of divider membrane, the seal membrane is connected to the opposite side of divider membrane, it has the effervescent tablet powder to fill between pellicle and the divider membrane, it has ABC dry powder fire extinguishing agent to fill between seal membrane and the divider membrane, and the bubble ball follows water column directive fire source department, is close to the fire source of high temperature, and bubble ball adventitia is broken by internal gas, and the broken bubble ball that bloies makes the water column scatter, has reduced the water column impact force, exposes the shrivelled kernel of dry simultaneously, and the water in the water column passes through pellicle and the quick reaction of effervescent tablet powder, produces a large amount of carbon dioxide gas, and carbon dioxide gas props up the, the shrivelled kernel becomes the bulging, and the shrivelled kernel is close to fire source department more, and carbon dioxide gas produces more and the inflation of being heated, reaches the burning thing surface after, and the shrivelled kernel is broken by the bursting at last, releases carbon dioxide gas and ABC dry powder fire extinguishing agent on the burning thing surface, improves fire extinguishing effect.
Preferably, the outer bubble sphere membrane, the separating membrane and the sealing membrane are all plastic membranes, the thickness of the outer bubble sphere membrane is 100-200 μm, the thickness of the separating membrane is 220-300 μm, the thickness of the sealing membrane is 500-800 μm, and the plastic membranes are elastic and easy to break when meeting high temperature.
Preferably, the semi-permeable membrane has a thickness of 1000 μm to 1500 μm, is thicker than the sealing membrane, is not easily broken, and after the thinner separating membrane is broken, the semi-permeable membrane and the sealing membrane together form a core membrane with a shriveled core, and the core membrane is not uniform and is easily broken under the action of high temperature and carbon dioxide gas.
Preferably, the bubble ball outer membrane is filled with carbon dioxide gas, the surface of the bubble ball outer membrane is coated with a waterproof coating, the waterproof coating enables the bubble ball outer membrane not to be broken easily after being soaked in water, the carbon dioxide gas can disperse oxygen in the air of a fire scene, the oxygen content in the air is reduced, and the fire control is facilitated.
Preferably, activated carbon fibers are filled between the sealing membrane and the separating membrane, have strong adsorbability, can purify a fire scene, and have an auxiliary effect on prevention and control of epidemic diseases after disasters.
Preferably, the bubble outer membrane is filled with small bubbles, each small bubble comprises a small bubble film, carbon dioxide gas is filled in each small bubble film, the thickness of each small bubble film is 200-220 microns, and after the small bubbles are dispersed, the small bubbles are broken again under the action of high temperature of a fire scene, so that water columns are further dispersed, the impact force is reduced, and carbon dioxide can also disperse oxygen in the air of the fire scene to reduce the oxygen content in the air.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) according to the scheme, the bubble ball is shot to the fire source along with the water column and is close to the high-temperature fire source, the outer membrane of the bubble ball is burst by the internal gas, the burst bubble ball enables the water column to be dispersed, the impact force of the water column is reduced, meanwhile, the shriveled inner core is exposed, water in the water column rapidly reacts with the effervescent tablet powder through the semipermeable membrane to generate a large amount of carbon dioxide, the carbon dioxide breaks the separation membrane, the ABC dry powder extinguishing agent is mixed with the rest effervescent tablet powder, the shriveled inner core is swelled, the shriveled inner core is close to the fire source, the carbon dioxide generates more and expands by heating, and finally, the shriveled inner core is burst, the carbon dioxide and the ABC dry powder extinguishing agent are released at the position close to the fire;
(2) the outer membrane of the bubble ball, the separating membrane and the sealing membrane are all plastic films, the thickness of the outer membrane of the bubble ball is 100-200 mu m, the thickness of the separating membrane is 220-300 mu m, the thickness of the sealing membrane is 500-800 mu m, and the plastic films have elasticity and are easy to break when meeting high temperature;
(3) the thickness of the semi-permeable membrane is 1000-1500 μm, the semi-permeable membrane is thicker than the sealing membrane and is not easy to break, and after the thinner separation membrane is broken, the semi-permeable membrane and the sealing membrane jointly form a core membrane with a shriveled core, the core membrane is not uniform and is easy to burst under the action of high temperature and carbon dioxide gas;
(4) the bubble ball outer membrane is filled with carbon dioxide gas, and the surface of the bubble ball outer membrane is coated with the waterproof coating, so that the bubble ball outer membrane is not easy to break after being soaked in water, the carbon dioxide gas can disperse oxygen in the air of a fire scene, the oxygen content in the air is reduced, and the fire control is facilitated;
(5) activated carbon fibers are filled between the sealing membrane and the separating membrane, have strong adsorbability, can purify a fire scene, and have an auxiliary effect on prevention and treatment of epidemic diseases after disasters;
(6) activated carbon fibers are filled between the sealing membrane and the separating membrane, have strong adsorbability, can purify a fire scene, and have an auxiliary effect on prevention and treatment of epidemic diseases after disasters;
(7) the small bubble balls are further filled in the bubble ball outer films and comprise small bubble ball films, carbon dioxide gas is filled in the small bubble ball films, the thickness of each small bubble ball film is 200-220 micrometers, and after the small bubble balls are dispersed, the small bubble balls are burst again under the action of high temperature of a fire scene, so that water columns are further dispersed, the impact force is reduced, the carbon dioxide can also disperse oxygen in the air of the fire scene, and the oxygen content in the air is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the bubble ball after the outer membrane is burst;
fig. 3 is a schematic structural view of the present invention after the separation membrane is ruptured.
The structure is schematic. The reference numbers in the figures illustrate:
1 bubble sphere outer membrane, 2 effervescent tablet powder, 3 semipermeable membrane, 4 separation membrane, 5 sealing membrane, 6 ABC dry powder fire extinguishing agent and 7 small bubble spheres.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; rather than all embodiments. Based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
Example 1:
referring to fig. 1-3, a fire-fighting foam ball comprises a foam ball outer membrane 1, wherein gas is filled in the foam ball outer membrane 1, a shriveled core is arranged in the foam ball outer membrane 1, the shriveled core comprises a semipermeable membrane 3, a separation membrane 4 and a sealing membrane 5, one side of the separation membrane 4 is connected with the semipermeable membrane 3, the other side of the separation membrane 4 is connected with the sealing membrane 5, effervescent tablet powder 2 is filled between the semipermeable membrane 3 and the separation membrane 4, an ABC dry powder extinguishing agent 6 and water-absorbing resin powder are filled between the sealing membrane 5 and the separation membrane 4, and the separation membrane 4 separates water from the ABC dry powder extinguishing agent 6 to reduce the influence on the decomposition reaction of the ABC dry powder extinguishing agent 6.
Wherein, the outer bubble sphere membrane 1, the separating membrane 4 and the sealing membrane 5 are all plastic films which have elasticity and are easy to break when meeting high temperature, the thickness of the outer bubble sphere membrane 1 is 150 μm, the thickness of the separating membrane 4 is 280 μm, and the thickness of the sealing membrane 5 is 700 μm.
The thickness of the semi-permeable membrane 3 is 1300 mu m, the semi-permeable membrane 3 and the sealing membrane 5 jointly form a nuclear membrane with a shriveled inner core, the nuclear membrane is uneven, and the nuclear membrane is easy to burst under the action of high temperature and carbon dioxide gas.
The bubble outer membrane 1 is filled with carbon dioxide gas, the surface of the bubble outer membrane 1 is coated with a waterproof coating, the waterproof coating enables the bubble outer membrane not to be broken easily after being soaked in water, the carbon dioxide gas can disperse oxygen in the air of a fire scene, the oxygen content in the air is reduced, and the fire control is facilitated.
Activated carbon fibers are filled between the sealing membrane 5 and the separating membrane 4, have strong adsorbability, can purify a fire scene, and have an auxiliary effect on prevention and treatment of epidemic diseases after disasters.
The small bubble ball 7 is also filled in the bubble ball outer membrane 1, the small bubble ball 7 comprises a small bubble ball film, carbon dioxide gas is filled in the small bubble ball film, and the thickness of the small bubble ball film is 210 mu m.
Bubble ball follows water column directive fire source department, be close to the fire source of high temperature, thinner bubble ball adventitia 1 that easily breaks is broken because of inside carbon dioxide gas thermal expansion, the spalling makes the water column scatter, release carbon dioxide gas simultaneously, little bubble ball 7 and shrivelled kernel, wherein, little bubble ball 7 follows the water column and continues to be close to the fire source of high temperature, little bubble ball film of little bubble ball 7 is broken because of inside carbon dioxide gas thermal expansion, the spalling makes the water column further scatter, release carbon dioxide gas simultaneously, it is far away to realize spraying the water column range, but the characteristics that the impact force is little.
The water of the water column rapidly reacts with the effervescent tablet powder 2 through the semipermeable membrane 3 of the shrivelled core to generate a large amount of carbon dioxide gas, the partially expanded shriveled core is shot to the surface of a combustion object along with the water, the carbon dioxide gas of the shriveled core rapidly expands under the action of high temperature at the surface of the combustion object, firstly, the separation membrane 4 with the thickness of 280 mu m is burst, the ABC dry powder fire extinguishing agent 6 and the water-absorbent resin powder are mixed with the effervescent tablet powder 2, the water-absorbent resin powder absorbs the residual water at the inner side of the semipermeable membrane to reduce the mixing of the ABC dry powder fire extinguishing agent 6 and the water, the carbon dioxide gas bursts the heterogeneous shriveled core membrane formed by the sealing membrane 5 and the semipermeable membrane 3, when the shriveled core can contact the surface of the combustion object, the flame can directly burst the core membrane, the ABC dry powder fire extinguishing agent 6 is scattered on the surface of the combustion object, and after the reaction, The solid particles such as phosphate isolate the air on the surface of the burning object, thereby realizing the fire extinguishing effect in the extremely large fire.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (2)
1. A fire control is bubble ball for putting out a fire which characterized in that: including bubble ball adventitia (1), bubble ball adventitia (1) intussuseption is filled with gas, be equipped with in bubble ball adventitia (1) and shrivel the kernel, shrivel the kernel includes pellicle (3), divider membrane (4) and seal membrane (5), pellicle (3) is connected to one side of divider membrane (4), seal membrane (5) is connected to the opposite side of divider membrane (4), it has effervescent tablet powder (2) to fill between pellicle (3) and divider membrane (4), it has ABC dry powder fire extinguishing agent (6) and absorbent resin powder to fill between seal membrane (5) and divider membrane (4); activated carbon fibers are filled between the sealing film (5) and the separating film (4);
the bubble outer membrane (1), the separating membrane (4) and the sealing membrane (5) are all plastic films, the thickness of the bubble outer membrane (1) is 100-200 mu m, the thickness of the separating membrane (4) is 220-300 mu m, and the thickness of the sealing membrane (5) is 500-800 mu m;
the bubble ball outer membrane (1) is filled with carbon dioxide gas, and the surface of the bubble ball outer membrane (1) is coated with a waterproof coating;
the small bubble ball film is characterized in that small bubble balls (7) are further filled in the bubble ball outer film (1), the small bubble balls (7) comprise small bubble ball films, carbon dioxide gas is filled in the small bubble ball films, and the thickness of each small bubble ball film is 200-220 micrometers.
2. A fire fighting balloon as defined in claim 1, wherein: the thickness of the semi-permeable membrane (3) is 1000-1500 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710773892.2A CN107320883B (en) | 2017-08-31 | 2017-08-31 | Bubble ball for fire control and extinguishment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710773892.2A CN107320883B (en) | 2017-08-31 | 2017-08-31 | Bubble ball for fire control and extinguishment |
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| Publication Number | Publication Date |
|---|---|
| CN107320883A CN107320883A (en) | 2017-11-07 |
| CN107320883B true CN107320883B (en) | 2021-06-15 |
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| CN201710773892.2A Active CN107320883B (en) | 2017-08-31 | 2017-08-31 | Bubble ball for fire control and extinguishment |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107754117A (en) * | 2017-11-17 | 2018-03-06 | 辽宁工程技术大学 | Autoreaction generates the goaf fireproof fire-extinguishing device and method of carbon dioxide |
| CN108057202B (en) * | 2017-12-26 | 2020-10-02 | 江山海圣消防科技有限公司 | Controllable fire extinguisher |
| CN111282179A (en) * | 2018-12-10 | 2020-06-16 | 江洪 | Method for extinguishing fire by non-oxygen plastic ball |
| CN113440769A (en) * | 2021-06-08 | 2021-09-28 | 江苏寰宇智能消防科技有限公司 | Fire-fighting turret with automatic aiming function |
| CN115300843B (en) * | 2022-07-11 | 2023-02-28 | 天立泰科技股份有限公司 | Forest fire rescue robot |
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|---|---|---|---|---|
| GB2136687A (en) * | 1983-03-10 | 1984-09-26 | Frederick Bradley | Fire suppressing device |
| CN1268383A (en) * | 1999-03-26 | 2000-10-04 | 兰学文 | Fire extinguisher |
| CN1713935A (en) * | 2002-08-09 | 2005-12-28 | 萨莉·朱塔伯哈 | Fire extinguishing ball |
| CN103706062A (en) * | 2013-12-31 | 2014-04-09 | 青岛火神消防设备有限公司 | Portable throw-type fire extinguisher |
| CN104800999A (en) * | 2014-01-29 | 2015-07-29 | 谢志明 | Device for real time emission of fire extinguishing bomb by fire-fighting lance |
-
2017
- 2017-08-31 CN CN201710773892.2A patent/CN107320883B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2136687A (en) * | 1983-03-10 | 1984-09-26 | Frederick Bradley | Fire suppressing device |
| CN1268383A (en) * | 1999-03-26 | 2000-10-04 | 兰学文 | Fire extinguisher |
| CN1713935A (en) * | 2002-08-09 | 2005-12-28 | 萨莉·朱塔伯哈 | Fire extinguishing ball |
| CN103706062A (en) * | 2013-12-31 | 2014-04-09 | 青岛火神消防设备有限公司 | Portable throw-type fire extinguisher |
| CN104800999A (en) * | 2014-01-29 | 2015-07-29 | 谢志明 | Device for real time emission of fire extinguishing bomb by fire-fighting lance |
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| CN107320883A (en) | 2017-11-07 |
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Effective date of registration: 20240815 Address after: Room 808, No. 270 Kefeng Road, Huangpu District, Guangzhou City, Guangdong Province 510700 Patentee after: Mofan Zhilian Technology (Guangdong) Co.,Ltd. Country or region after: China Address before: Room 808, No. 4 Yueyang 1st Street, Huangpu District, Guangzhou City, Guangdong Province 510000 Patentee before: Mofan Investment Holdings (Guangzhou) Co.,Ltd. Country or region before: China |