CN1602119A - Far infrared radiation electrothermal sheet and its prepn method - Google Patents
Far infrared radiation electrothermal sheet and its prepn method Download PDFInfo
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- CN1602119A CN1602119A CN 03157521 CN03157521A CN1602119A CN 1602119 A CN1602119 A CN 1602119A CN 03157521 CN03157521 CN 03157521 CN 03157521 A CN03157521 A CN 03157521A CN 1602119 A CN1602119 A CN 1602119A
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Abstract
The electrothermic sheet includes far infrared layer of cloth, upper and lower base cloth layer, carbon fiber heating layer, strengthened melt blown fabric layer, electrode and power. Carbon fiber heating layer is a designed face-heating element combined from series-parallel connected resistors. Other parts are not heating elements. Each part through sewing or stitching manners is combined as a whole. The invention also discloses method for preparing the far infrared radiation electrothermic sheet. Advantages are: simple manufacturing method and safety and health.
Description
Technical field
The present invention relates to electric heater unit and preparation method thereof.
Background technology
Traditional far-infrared heating element generally adopts heating elements such as metallic resistance silk, alloy silk, PTC Electric radiant Heating Film, the heater element of metal, alloy or Electric radiant Heating Film all is metallic element, oxide etc., during its heating power, carry out heat transmission by convection current or conduction pattern, heating efficiency is lower, and useful life is short.
Based on the heater element of carbon, as the carbon fiber heating element, its main electric heating is converted to far infrared radiation and conducts heat, and the heat efficiency is very high, and effective thermal efficiency has surpassed 95%, and therefore having developed both at home and abroad is the various electric heater units of heater element with the carbon fiber.Disclose a kind of carbon fiber far infrared electric heating plate as Chinese patent 00123999.6, its heater adopts the conductive carbon fibre layer; Chinese patent 96122545.9 discloses a kind of far-infrared radiator, and Chinese patent CN 1062408C, CN 1209719A, and its material of main parts such as CN 2355648Y also are carbon fibers.Special public clear 51-3098 number of Japan Patent, the spy opens clear 60-107288 number, the spy opens clear 62-281293 number, United States Patent (USP) the 5th, 459, No. 327 etc., utilize the calandria of carbon fiber and organic compound radiation far infrared radiation line, but generally with resin as insulating barrier, form rigidity or semirigid heating sheet or plate, and the voltage that uses is 220V or 110V.Use at conduct flexibility or software heater element, or then there are significant disadvantages in voltage safe in utilization or rechargeable battery when using.Chinese patent 01270075.4 discloses a kind of electro-heat equipment of furnishings, its exothermic material is the fine and closely woven carbon fiber that adopts heat-resistant insulating layer to coat, by the crooked heating line that twines on tablet, be difficult to control the resistance stability of electro-heat equipment in the reality, the sparking or the heating part that cause heater element easily are overheated, and have shortcomings such as processing cost height.
Summary of the invention
The purpose of this invention is to provide a kind of electric heater unit and preparation method thereof, specifically, is infrared radiated electric sheet of a kind of safety and Health and preparation method thereof.The present invention is based on the conductivity and the far-infrared radiated property of carbon fiber, overcome the deficiency of existing heating element technology safety in utilization, a kind of new electrically heating device flexible and that soft body structure, high thermal efficiency, far infrared radiation heating, long life, low cost are processed that has is provided.
For achieving the above object, the present invention takes following scheme: infrared radiated electric sheet of the present invention comprise the far infrared layer of cloth, up and down base cloth layer, carbon fiber heating layer, strengthen spunbond layer of cloth, electrode and power supply; The carbon fiber heating layer is the face heater by the connection in series-parallel combination of the cell resistance of design, and other is heating part not; Each several part is to make and/or the pressing mode is combined as an integral body.
Described carbon fiber heating layer is with one of the carbon fiber felt of material with carbon element composition, carbon cloth, carbon fiber wire, graphite fibre felt, graphite fiber cloth, carbon fiber paper or its combination.
The material of base cloth layer is natural or one of chemical fiber cloth, felt, blanket, non-woven paper or its combination up and down.The material of base cloth layer can also be one of film, cloth, sheet material or its combination of plastics, fiber and/or rubber up and down.
The material of described far infrared layer of cloth is one of the fiber cloth that contains far-infared ceramic powder, far-infared ceramic powder coating layer of cloth or its combination.
The material of the spunbond layer of cloth of described reinforcement is that one of spun-bonded non-woven fabrics, non-woven fibre screen cloth are planted or its combination.
Described electrode is by one of zinc-plated or silver-plated copper wire bundle, sheet or its combination.Layout becomes multiply wire harness and/or grid to these bundles with sheet.
Described power supply is charging and/or dry cell, the safe voltage voltage regulator of 0-54V, the storage battery of 0-54V.
The preparation method of the above infrared radiated electric sheet comprises following process steps:
A. according to the working voltage and the heating power of designed electric heating piece, determine the physical dimension of carbon fiber heating layer cell resistance, cutting, preparation heater element, and design series-parallel structure and circuit diagram;
B. zinc-plated or silver-plated copper wire bundle and/or sheet layout are become the multiply wire harness and/or the grid of straight shape or S shape, with making and/or compression method is preformed in and strengthens on the spunbond layer of cloth, reserve the contact conductor that is connected with power supply, binding post or jack clamping with power supply is one again, and joint is placed in the electric heating piece;
C. the circuit of a design is set by step determined the series-parallel system of electrode, and the electrode for preparing with step b is laid on the carbon fiber heating layer, will strengthen spunbond layer of cloth again with making and/or compression method moulding carbon fiber heating layer and combination of electrodes surface layer;
D. base cloth layer, carbon fiber heating layer and combination of electrodes surface layer on the lay, far infrared layer of cloth, base cloth layer down successively from bottom to up, by the design suture needle gage, the resistance of electric heating piece is adjusted and guaranteed to the spacing of suture in length and breadth, prepares the infrared radiated electric sheet of material with carbon element as heating element with method of sewing.
Advantage of the present invention is:
1. soft; 2. safety and Health; 3. employing carbon fibre material, the far-infrared health health care; 4. processing is simple, reliable in quality etc.
Description of drawings
Fig. 1 is the result of use figure that carbon fibre heating plate of the present invention adopts nickel-cadmium rechargeable battery heating
Fig. 2 is used for the result of use figure of automobile cushion for carbon fibre heating plate of the present invention
Fig. 3 is that the far infrared radiation of carbon fiber heating sheet of the present invention is to the radiant-energy spectrum curve chart
Embodiment
Embodiment 1
The electric conduction of carbon fiber paper that experiment is chosen is for length being the pure carbon paper of the chopped carbon fiber manufacturing of 6mm, with 20 grams/square metre electric conduction of carbon fiber paper cut two that become to be of a size of 50mm * 360mm, the mode of two carbon fiber papers series connection is adopted in the connection in series-parallel of its electric pad design.Selecting diameter for use is that 6 of Φ 0.05mm tinned wirds add and are twisted as one, 6 bursts of tinned wird layouts are become the multiply wire harness of S shape by the spacing of per share interval 1mm, be preformed on the spunbond layer of cloth of reinforcement with compression method, reserve the contact conductor that is connected with power supply, jack clamping with power supply is an one again, and joint is placed in the electric heating piece.Base cloth layer adopt grammes per square metre be 70 grams/square metre the chemical fibre felt, far infrared cloth adopts the cloth that contains the far-infared ceramic powder coating, from bottom to up successively base cloth layer, carbon fiber heating layer and combination of electrodes surface layer, far infrared layer of cloth under the lay, go up base cloth layer, by the design suture needle gage (present embodiment is 0.3mm), the resistance of electric heating piece is adjusted and guaranteed to the spacing of suture (present embodiment is 0.5mm) in length and breadth, the resistance of the heating sheet under the design size of present embodiment is 1.6 Ω.Under the safe voltage of 3.6V, test, during thermometric, the felt rug that two thickness of Ge Jia are 0.5mm about the electric heating piece, the temperature rise result such as the following table 1 of its carbon fiber heating sheet are shown:
The heating experimental data of the carbon fiber electrically backing that table 1 embodiment 1 makes
| Heating time (minute) | Voltage, electric current and power | Surface temperature | Heating time (minute) | Voltage, electric current and power | Surface temperature |
| ????0 | ?3.6V，2.0A，7.2W | ??27℃ | ????0 | ?4.1V，2.2A，9W | ?27℃ |
| ????5 | ?3.6V，2.0A，7.2W | ??32℃ | ????20 | ?4.1V，2.2A，9W | ?47℃ |
| ????30 | ?3.6V，2.0A，7.2W | ??45℃ | ????50 | ?4.1V，2.2A，9W | ?51℃ |
| ????60 | ?3.6V，2.0A，7.2W | ??47℃ | ????75 | ?4.1V，2.2A，9W | ?56℃ |
| ????240 | ?3.6V，2.0A，7.2W | ??47℃ | ????200 | ?4.1V，2.2A，9W | ?58℃ |
| ????360 | ?3.6V，2.0A，7.2W | ??47℃ | ????300 | ?4.1V，2.2A，9W | ?59℃ |
| ????720 | ?3.6V，2.0A，7.2W | ??47℃ | ????720 | ?4.1V，2.2A，9W | ?59℃ |
Embodiment 2
With 20 the gram/square metre electric conduction of carbon fiber paper cut two that become to be of a size of 50mm * 260mm, other are with embodiment 1.
The resistance of the carbon fiber electrically backing of making is 2.2 Ω, switches under the 3.6V direct voltage, adopts the temperature at the temperature thermocouple measurement heating sheet place of the conventional universal meter of VC9805A type, and its method of measurement is with embodiment 1, and its result such as table 2 show:
The heating temp of the carbon fiber electrically backing of table 2 embodiment 2 is measured
| Heating time (minute) | Voltage, electric current and power | Surface temperature | Heating time (minute) | Voltage, electric current and power | Surface temperature |
| ????0 | ?3.6V，1.73A，6.2W | ?27℃ | ????60 | ?3.6V，1.71A，6.15W | ?50℃ |
| ????5 | ?3.6V，1.70A，6.1W | ?38℃ | ????240 | ?3.6V，1.71A，6.15W | ?50℃ |
| ????20 | ?3.6V，1.73A，6.2W | ?45℃ | ????480 | ?3.6V，1.71A，6.15W | ?50℃ |
| ????30 | ?3.6V，1.70A，6.1W | ?46℃ | ????1000 | ?3.6V，1.71A，6.15W | ?50℃ |
| ????40 | ?3.6V，1.71A，6.15W | ?49℃ | ????2000 | ?3.6V，1.71A，6.15W | ?50℃ |
During experiment test, adopt nickel-cadmium rechargeable battery, rated voltage is 3.6V, and state such as Fig. 1 of its test show.Experimental result shows: the carbon fiber electrically backing that this embodiment 2 manufactures and designs is under the 3.6V rechargeable battery, the heating temp of heating position can reach 50 ℃ in energising in 10 minutes, and at two joint 3.6V, under the rechargeable battery of 1000mAh (battery that shows as Fig. 1), its heating temp and test result such as the table 3 of service time show continuously.
The heating temp of the carbon fiber electrically backing of table 3 embodiment 2 is measured
| Conduction time (min) | The heating temp of heating sheet (℃) | Electric current (A) |
| ????0 | ????27 | ????0 |
| ????10 | ????46 | ????1.75 |
| ????20 | ????50 | ????1.75 |
| ????30 | ????52 | ????1.75 |
| ????95 | ????43 | ????1.62 |
| ????120 | ????35 | ????1.50 |
| ????150 | ????32 | ????1.42 |
Embodiment 3: the carbon fiber electrically backing is used for automobile cushion
Adopt the carbon fiber paper of embodiment 1 same size, the design and production method embodiment 1 of electrode.Its design suture needle gage (present embodiment is 0.3mm), the resistance of electric heating piece is adjusted and guaranteed to the spacing of suture (present embodiment is 0.5mm) in length and breadth, the resistance of the heating sheet of making is 3.6 Ω, under the heating of 12V vehicle charging battery, its test result such as table 4.
Adopt result of use such as Fig. 2 of the carbon fiber automobile cushion of this embodiment manufacturing to show that experimental result shows: to adopt the carbon fiber electric heating pad of this embodiment manufacturing to can be applicable in the heating of automotive seat, have broad application prospects.
The carbon fiber sheet that table 4 embodiment 3 makes is used for the serviceability temperature of automobile cushion
| Time (min) | Voltage, electric current, power | The heating pad surface temperature (℃) |
| ????0 | ????12V，3.15A，38W | ????27 |
| ????5 | ????12V，3.15A，38W | ????49 |
| ????10 | ????12V，3.20A，38W | ????58 |
| ????20 | ????12V，3.20A，38W | ????64 |
| ????30 | ????12V，3.20A，38W | ????65 |
| ????70 | ????12V，3.20A，38W | ????70 |
| ????90 | ????12V，3.20A，38W | ????70 |
| ????360 | ????12V，3.20A，38W | ????70 |
Embodiment 4
The thickness that experiment adopts U.S. ZOLTEK company to produce is the carbon fiber felt of 2mm.
Adopting the heating chip size of this carbon fiber felt design is 600mm * 150mm, adopt electrode and the method for sewing of embodiment 1, the resistance of the carbon fiber felt heating blanket that obtains is 6.5 Ω, adopt 24V, the voltage regulator of 4A is to this heating blanket heating, and the heating power of its electric blanket is 90W, has the far infrared feature that the carbon fiber heating material has, as shown in Figure 3, the function that has health care.Can be used for the manufacturing of the carbon fiber heating blanket under the safe voltage, solved the safety issue that electric blanket uses.
Embodiment 5
The upper and lower base cloth layer that implement to adopt be grammes per square metre be 70 grams/square metre the thermoplastic nylon fiber cloth, the grid that electrode adopts silver-plated copper wire bundle layout to become, the width of grid is 5mm, the heating sheet material adopts graphite fiber cloth, grammes per square metre be 100 the gram/square metre, other are with embodiment 1.Adopt the mode of hot pressing to make carbon fibre heating plate, the temperature of pressing is the above 20-30 of nylon fusing point ℃, pressure is 5MPa, press time is 5 minutes, die sinking when being cooled to 40 ℃ under the pressurize subsequently, obtain with the carbon fiber heating sheet of nylon cloth as the face base cloth layer, can be applicable to industry, agricultural etc. needs waterproof or moistureproof field.
Embodiment 6-18
The preparation method of embodiment 6-18 is identical with embodiment 1, the table 5 that each layer structure of the described infrared radiated electric sheet of embodiment 6-18 vides infra.
Embodiment 6-18 can reach the described effect of embodiment 1-5 through the suitable design and the arrangement of size.
The heating plate structure of table 5 embodiment 6-18
| The far infrared layer of cloth | Base cloth layer up and down | The carbon fiber heating layer | Strengthen spunbond layer of cloth | Electrode and power supply | |
| Embodiment 6 | The fiber cloth that contains far-infared ceramic powder | Chemical fiber cloth | Carbon fiber felt | Spun-bonded non-woven fabrics | Tin-coated copper tow, 36V storage battery |
| Embodiment 7 | Far-infared ceramic powder coating layer of cloth | Chemical fiber cloth | Carbon fiber felt | Spun-bonded non-woven fabrics | Tin-coated copper tow, 36V storage battery |
| Embodiment 8 | Embodiment 6 and 7 combination up and down | Chemical fiber cloth | Carbon fiber felt | Spun-bonded non-woven fabrics | Tin-coated copper tow, 36V storage battery |
| Embodiment 9 | Far-infared ceramic powder coating layer of cloth | Chemical fiber cloth | Carbon fiber felt | Spun-bonded non-woven fabrics | Silver-plated copper tow, 36V storage battery |
| Embodiment 10 | The fiber cloth that contains far-infared ceramic powder | Chemical fiber cloth | Carbon cloth | Spun-bonded non-woven fabrics | Tin-coated copper tow, 36V storage battery |
| Embodiment 11 | The fiber cloth that contains far-infared ceramic powder | Chemical fiber cloth | Carbon fiber wire | Spun-bonded non-woven fabrics | Tin-coated copper tow, 36V storage battery |
| Embodiment 12 | The fiber cloth that contains far-infared ceramic powder | Chemical fiber cloth | The graphite fibre felt | Spun-bonded non-woven fabrics | Tin-coated copper tow, 36V storage battery |
| Embodiment 13 | The fiber cloth that contains far-infared ceramic powder | Chemical fiber cloth | Graphite fiber cloth | Spun-bonded non-woven fabrics | Tin-coated copper tow, 36V storage battery |
| Embodiment 14 | The fiber cloth that contains far-infared ceramic powder | Chemical fiber cloth | Carbon fiber paper | Spun-bonded non-woven fabrics | Tin-coated copper tow, 36V storage battery |
| Embodiment 15 | The fiber cloth that contains far-infared ceramic powder | Polyethylene plastic film | Carbon fiber paper | Spun-bonded non-woven fabrics | Tin-coated copper tow, 36V storage battery |
| Embodiment 15 | The fiber cloth that contains far-infared ceramic powder | Non-woven paper | Carbon fiber paper | Spun-bonded non-woven fabrics | Tin-coated copper tow, 36V storage battery |
| Embodiment 16 | The fiber cloth that contains far-infared ceramic powder | Chemical fiber cloth | Carbon fiber felt | The non-woven fibre screen cloth | Tin-coated copper tow, 36V storage battery |
| Embodiment 17 | The fiber cloth that contains far-infared ceramic powder | Chemical fiber cloth | Carbon fiber felt | Spun-bonded non-woven fabrics | Tin-coated copper tow network, 36V storage battery |
| Embodiment 18 | The fiber cloth that contains far-infared ceramic powder | Chemical fiber cloth | Carbon fiber felt | Spun-bonded non-woven fabrics | Tin-coated copper tow network, 24V storage battery |
Claims (10)
1. infrared radiated electric sheet is characterized in that: comprise the far infrared layer of cloth, up and down base cloth layer, carbon fiber heating layer, strengthen spunbond layer of cloth, electrode and power supply; The carbon fiber heating layer is the face heater by the connection in series-parallel combination of the cell resistance of design, and other is heating part not; Each several part is to make and/or the pressing mode is combined as an integral body.
2. infrared radiated electric sheet according to claim 1 is characterized in that: described carbon fiber heating layer is with one of the carbon fiber felt of material with carbon element composition, carbon cloth, carbon fiber wire, graphite fibre felt, graphite fiber cloth, carbon fiber paper or its combination.
3. infrared radiated electric sheet according to claim 1 is characterized in that: the material of described up and down base cloth layer is natural or one of chemical fiber cloth, felt, blanket, non-woven paper or its combination.
4. infrared radiated electric sheet according to claim 1 is characterized in that: one of the film that the described material of base cloth layer up and down is plastics, fiber and/or rubber, cloth, sheet material or its combination.
5. infrared radiated electric sheet according to claim 1 is characterized in that: the material of described far infrared layer of cloth is one of the fiber cloth that contains far-infared ceramic powder, far-infared ceramic powder coating layer of cloth or its combination.
6. infrared radiated electric sheet according to claim 1 is characterized in that: the material of the spunbond layer of cloth of described reinforcement is that one of spun-bonded non-woven fabrics, non-woven fibre screen cloth are planted or its combination.
7. infrared radiated electric sheet according to claim 1 is characterized in that: described electrode is by one of zinc-plated or silver-plated copper wire bundle, sheet or its combination.
8. infrared radiated electric sheet according to claim 7 is characterized in that: the zinc-plated or silver-plated copper wire bundle and/or the sheet layout of described electrode become multiply wire harness and/or grid.
9. infrared radiated electric sheet according to claim 1 is characterized in that: described power supply is charging and/or dry cell, the safe voltage voltage regulator of 0-54V, the storage battery of 0-54V.
10. the preparation method of the described infrared radiated electric sheet of one of claim 1～9 is characterized in that, comprises following process steps:
A. according to the working voltage and the heating power of designed electric heating piece, determine the physical dimension of carbon fiber heating layer cell resistance, cutting, preparation heater element, and design series-parallel structure and circuit diagram;
B. zinc-plated or silver-plated copper wire bundle and/or sheet layout are become the multiply wire harness and/or the grid of straight shape or S shape, with making and/or compression method is preformed in and strengthens on the spunbond layer of cloth, reserve the contact conductor that is connected with power supply, binding post or jack clamping with power supply is one again, and joint is placed in the electric heating piece;
C. the circuit of a design is set by step determined the series-parallel system of electrode, and the electrode for preparing with step b is laid on the carbon fiber heating layer, will strengthen spunbond layer of cloth again with making and/or compression method moulding carbon fiber heating layer and combination of electrodes surface layer;
D. base cloth layer, carbon fiber heating layer and combination of electrodes surface layer on the lay, far infrared layer of cloth, base cloth layer down successively from bottom to up, by the design suture needle gage, the resistance of electric heating piece is adjusted and guaranteed to the spacing of suture in length and breadth, prepares the infrared radiated electric sheet of material with carbon element as heating element with method of sewing.
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| CNB031575218A CN100534238C (en) | 2003-09-23 | 2003-09-23 | Far infrared radiation electrothermal sheet and its preparation method |
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| CN1602119A true CN1602119A (en) | 2005-03-30 |
| CN100534238C CN100534238C (en) | 2009-08-26 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658781A (en) * | 2016-12-28 | 2017-05-10 | 平湖市科苑技术服务有限公司 | Heat generation device for instantaneous hot carbon fiber heating carpet |
| CN107046741A (en) * | 2017-05-19 | 2017-08-15 | 连云港磐石复合材料有限公司 | A kind of flexible sheet carbon fiber exothermic part |
| CN108253875A (en) * | 2018-01-16 | 2018-07-06 | 清远建滔暖芯技术有限公司 | The detection control method and system of a kind of graphene carbon fiber cloth |
| CN112417806A (en) * | 2020-11-11 | 2021-02-26 | 无锡优波生命科技有限公司 | Design method of TCM component planar circuit diagram |
| WO2022007433A1 (en) * | 2020-07-09 | 2022-01-13 | 碳元科技股份有限公司 | Graphite sheet for far-infrared heating and preparation method therefor |
| CN114103375A (en) * | 2021-11-26 | 2022-03-01 | 铁力山（北京）控制技术有限公司 | Carbon fiber composite electric heating wood board with heat storage performance and preparation method thereof |
| CN114567941A (en) * | 2022-03-11 | 2022-05-31 | 郑州大学 | Method for preparing electrothermal heating sheet by using carbon fiber braided fabric leftover material |
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2003
- 2003-09-23 CN CNB031575218A patent/CN100534238C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658781A (en) * | 2016-12-28 | 2017-05-10 | 平湖市科苑技术服务有限公司 | Heat generation device for instantaneous hot carbon fiber heating carpet |
| CN107046741A (en) * | 2017-05-19 | 2017-08-15 | 连云港磐石复合材料有限公司 | A kind of flexible sheet carbon fiber exothermic part |
| CN107046741B (en) * | 2017-05-19 | 2023-08-22 | 连云港长运纺织材料有限公司 | Flexible sheet carbon fiber heating element |
| CN108253875A (en) * | 2018-01-16 | 2018-07-06 | 清远建滔暖芯技术有限公司 | The detection control method and system of a kind of graphene carbon fiber cloth |
| WO2022007433A1 (en) * | 2020-07-09 | 2022-01-13 | 碳元科技股份有限公司 | Graphite sheet for far-infrared heating and preparation method therefor |
| CN112417806A (en) * | 2020-11-11 | 2021-02-26 | 无锡优波生命科技有限公司 | Design method of TCM component planar circuit diagram |
| CN112417806B (en) * | 2020-11-11 | 2023-12-19 | 无锡优波生命科技有限公司 | TCM element plane circuit diagram design method |
| CN114103375A (en) * | 2021-11-26 | 2022-03-01 | 铁力山（北京）控制技术有限公司 | Carbon fiber composite electric heating wood board with heat storage performance and preparation method thereof |
| CN114567941A (en) * | 2022-03-11 | 2022-05-31 | 郑州大学 | Method for preparing electrothermal heating sheet by using carbon fiber braided fabric leftover material |
| CN114567941B (en) * | 2022-03-11 | 2024-03-15 | 郑州大学 | Method for preparing electrothermal heating sheet by utilizing carbon fiber braided fabric leftover materials |
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| CN100534238C (en) | 2009-08-26 |
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Owner name: HUANG BINFENG Free format text: FORMER OWNER: DONGFANG HUICHEN CARBON FIBER TECH CO., LTD., BEIJING Effective date: 20070126 |
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Effective date of registration: 20070126 Address after: 100102 Beijing City, Chaoyang District Lize Park No. 106 Wangjing science and Technology Park E block 502C Applicant after: Huang Binfeng Address before: 100101 Beijing city Chaoyang District Xiaoying Road No. 10 Yangming Plaza B building room 1407 Applicant before: Dongfang Huichen Carbon Fiber Tech Co., Ltd., Beijing |
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