CN102329118B - Lightweight wallboard manufactured by utilizing printing and dyeing sludge and manufacturing method thereof - Google Patents
Lightweight wallboard manufactured by utilizing printing and dyeing sludge and manufacturing method thereof Download PDFInfo
- Publication number
- CN102329118B CN102329118B CN2011101677650A CN201110167765A CN102329118B CN 102329118 B CN102329118 B CN 102329118B CN 2011101677650 A CN2011101677650 A CN 2011101677650A CN 201110167765 A CN201110167765 A CN 201110167765A CN 102329118 B CN102329118 B CN 102329118B
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- Prior art keywords
- printing
- parts
- dyeing sludge
- cement
- dyeing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000004043 dyeing Methods 0.000 title claims abstract description 63
- 238000007639 printing Methods 0.000 title claims abstract description 63
- 239000010802 sludge Substances 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 32
- 239000002699 waste material Substances 0.000 claims abstract description 30
- 239000010881 fly ash Substances 0.000 claims abstract description 29
- 239000004568 cement Substances 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000004575 stone Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 29
- 239000010433 feldspar Substances 0.000 claims description 23
- 239000002245 particle Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000011398 Portland cement Substances 0.000 claims description 7
- 239000004567 concrete Substances 0.000 claims description 7
- 239000011449 brick Substances 0.000 claims description 6
- 239000010883 coal ash Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 4
- 238000007906 compression Methods 0.000 abstract description 12
- 230000006835 compression Effects 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 7
- 238000001035 drying Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 abstract 1
- 230000018044 dehydration Effects 0.000 abstract 1
- 238000006297 dehydration reaction Methods 0.000 abstract 1
- -1 10 parts Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to the technical field of lightweight wallboards and in particular relates to a lightweight wallboard manufactured by utilizing printing and dyeing sludge and a manufacturing method thereof. The lightweight wallboard is manufactured from the following raw materials in parts by weight: 30-50 parts of printing and dyeing sludge, 30-50 parts of construction wastes, 30-50 parts of potassium feldspar powder, 10-40 parts of fly ash and 40-60 parts of cement. The adopted printing and dyeing sludge dispenses with dehydration and drying and can be used directly, therefore the energy is saved, the cost is low and the production efficiency is high; the manufactured lightweight wallboard has low shrinkage, light weight and high compression strength; the compression strength is as high as 60-120MPa; the lightweight wallboard has better physical and mechanical properties than the common natural stones; and plenty of construction wastes, printing and dyeing sludge and fly ash are used, therefore the manufactured product has low cost and high economic benefit, and the method is not only can be used for turning wastes into wealth, but also is beneficial to reduction of environmental pollution and has obvious economic and social benefits.
Description
Technical field
The invention belongs to the Light trabs technical field, relate in particular to a kind of Light trabs and manufacture method thereof of utilizing printing and dyeing sludge to make.
Background technology
In order to meet the different demands of construction market, the materials for walls such as heat-insulation wall plate, Acoustic barrier plate, exterior wall wallboard, decorative wall panels have appearred on market.Country and place and relevant department all clear to classify wallboard as new wall material kind that the emphasis support develops.The residing position of wallboard is different, and its starting material form, manufacturing technique requirent also is not quite similar, and many kinds, seriation are the needs of development of the situation.
The production aspect of the existing light wall material of present China, Chinese invention patent ZL200610070220.7 has introduced a kind of light wallboard of desulfurated gypsum, it is to be made by the raw material of following weight part: 100 parts of desulfurization gypsum powders, polystyrene foam particles 3-10 part, flyash 30-80 part, ordinary Portland cement 1-5 part, 8% the compositions such as polyvinyl alcohol water solution 1-3 part.
Chinese invention patent application 200810159083.3 has been introduced a kind of Light trabs and manufacturing process thereof, comprises that the raw material of following weight percent is made: slag 30%, below granularity 8MM; Flyash 35%, below granule diameter 2MM; Building waste 15%, granularity 8MM is following, powder containing quantity is below 10%; Cement: 20%; In addition, then add water reducer, hydrophober, accelerating chemicals; The water that adds again described slag, flyash, building waste, cement siccative composition weight summation 17～22%.
But above Light trabs shrinking percentage is high, ultimate compression strength is poor, and particularly ultimate compression strength does not reach again requirement far away, can not be applied to the high occasion of pouring.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, and a kind of Light trabs that utilizes printing and dyeing sludge to make is provided, this Light trabs shrinking percentage is little, ultimate compression strength is high.
Another object of the present invention is to provide a kind of manufacture method of utilizing the Light trabs of printing and dyeing sludge manufacturing, need not printing and dyeing sludge is dewatered and drying treatment, directly use and get final product, production efficiency is high, and cost is low.
The present invention is achieved through technology.
A kind of Light trabs that utilizes printing and dyeing sludge to make, it comprises the raw material of following weight part:
Printing and dyeing sludge 30-50 part
Building waste 30-50 part
Feldspar in powder 30-50 part
Flyash 10-40 part
Pearlstone 10-40 part
Cement 40-60 part.
Preferably, it comprises the raw material of following weight part:
Printing and dyeing sludge 30-40 part
Building waste 40-50 part
Feldspar in powder 30-40 part
Flyash 10-30 part
Pearlstone 10-30 part
Cement 40-50 part.
More preferred, it comprises the raw material of following weight part:
35 parts of printing and dyeing sludges
35 parts of building wastes
30 parts of feldspars in powder
20 parts, flyash
15 parts of pearlstones
45 parts of cement.
Wherein, described building waste be brick, watt, one or more in stone, soil and concrete blocks mix in any proportion.
Wherein, the particle diameter of described feldspar in powder is below 100 orders.
Wherein, described flyash is the desulfurized powder coal ash.
Wherein, described cement is ordinary Portland cement.
A kind of manufacture method of utilizing the Light trabs of printing and dyeing sludge manufacturing, it comprises the following steps:
A, the building waste of above-mentioned formula ratio is crushed to below 200 orders, with printing and dyeing sludge, the feldspar in powder of above-mentioned formula ratio, mixes rear granulation,, at 1150-1500 ℃ of roasting 20-120 minute, obtain roasting particle after cooling;
B, the roasting particle that step a is obtained and cement, flyash and the pearlstone of above-mentioned formula ratio stir in stirrer, obtain mixture;
C, add the water that accounts for step b mixture 5%-20% weight percent to continue to be stirred to evenly, obtain stand-by mixture;
D, the stand-by mixture that step c is obtained add moulding in model, the demoulding and maintenance, obtain a kind of Light trabs that utilizes printing and dyeing sludge to make.
Wherein, also can add a kind of or several arbitrarily in pigment, river sand or concrete admixture in described step b, can add in right amount according to demand.
Beneficial effect of the present invention is:
(1) printing and dyeing sludge in raw material contains a large amount of organic compositions, produce disconnected space in roasting particle, and finally reduce the unit weight of Light trabs, flyash in raw material and pearlstone also play the purpose that reduces Light trabs unit weight, building waste in raw material and feldspar in powder improve roasting particle intensity, thereby have increased the ultimate compression strength of Light trabs.The Light trabs shrinking percentage that the present invention makes is little, light weight, ultimate compression strength are high, its weight is 1/16 of common brick " 49 " wall weight, be 1/2 left and right of new GRC wallboard weight, ultimate compression strength, up to 60-120MPa, has more good physical and mechanical property than general natural rock;
(2) the present invention uses a large amount of building wastes, printing and dyeing sludge and flyash, the product cost that makes is low, economic benefit is high, not only can turn waste into wealth, and be conducive to improve environmental pollution, meet innoxious, minimizing and the resource utilization principle of China's solid waste disposal, have significant economic benefit and social benefit;
(3) printing and dyeing sludge of the present invention's employing need not to dewater and drying treatment, directly uses and gets final product, and saves the energy, and cost is low, and production efficiency is high.The heavy metal that printing and dyeing sludge of the present invention contains is cured through roasting, heavy metal concentration in Light trabs product leach liquor is far below " GB5085.3-1996 Hazardous wastes judging standard " and " GB3828-2002 water environment quality standard ", can not cause secondary pollution to environment, realize the innoxious and recycling to printing and dyeing sludge.
Embodiment
Below the present invention is further illustrated with specific embodiment, but the present invention is not subjected to the restriction of following embodiment.
Embodiment 1
A kind of Light trabs that utilizes printing and dyeing sludge to make, it comprises the raw material of following weight part: 30 parts of printing and dyeing sludges, 30 parts of building wastes, 30 parts of feldspars in powder, 10 parts, flyash, 10 parts of pearlstones, 40 parts of cement.
Building waste is taken from the construction site, Dongguan, is mainly 5 parts of bricks, 20 parts of soil 5 parts and concrete blockss.
Printing and dyeing sludge is taken from Dongguan printing and dyeing mill.
The particle diameter of feldspar in powder is below 100 orders.
Flyash is the desulfurized powder coal ash.
Cement is ordinary Portland cement.
A kind of manufacture method of utilizing the Light trabs of printing and dyeing sludge manufacturing, it comprises the following steps:
A, the building waste of above-mentioned formula ratio is crushed to below 200 orders, with printing and dyeing sludge, the feldspar in powder of above-mentioned formula ratio, mixes rear granulation,, 1150 ℃ of roastings 20 minutes, obtain roasting particle after cooling;
B, the roasting particle that step a is obtained and cement, flyash and the pearlstone of above-mentioned formula ratio stir in stirrer, obtain mixture;
C, add the water that accounts for step b mixture 5% weight percent to continue to be stirred to evenly, obtain stand-by mixture;
D, the stand-by mixture that step c is obtained add moulding in model, the demoulding and maintenance, obtain a kind of Light trabs that utilizes printing and dyeing sludge to make.
The prepared Light trabs of technical scheme of application the present embodiment, ultimate compression strength is 60MPa, unit weight is 350kg/m
3Drying shrinkage 0.021%.
Embodiment 2
A kind of Light trabs that utilizes printing and dyeing sludge to make, it comprises the raw material of following weight part: 40 parts of printing and dyeing sludges, 50 parts of building wastes, 40 parts of feldspars in powder, 10 parts, flyash, 30 parts of pearlstones, 60 parts of cement.
Printing and dyeing sludge is taken from Dongguan printing and dyeing mill.
Building waste is taken from construction site, Shenzhen, is mainly 5 parts of brick 10 part, watts, 5 parts, stone, 30 parts of concrete blockss.
The particle diameter of feldspar in powder is below 100 orders.
Flyash is the desulfurized powder coal ash.
Cement is ordinary Portland cement.
A kind of manufacture method of utilizing the Light trabs of printing and dyeing sludge manufacturing, it comprises the following steps:
A, the building waste of above-mentioned formula ratio is crushed to below 200 orders, with printing and dyeing sludge, the feldspar in powder of above-mentioned formula ratio, mixes rear granulation,, 1250 ℃ of roastings 40 minutes, obtain roasting particle after cooling;
B, the roasting particle that step a is obtained and cement, flyash and the pearlstone of above-mentioned formula ratio stir in stirrer, obtain mixture;
C, add the water that accounts for step b mixture 15% weight percent to continue to be stirred to evenly, obtain stand-by mixture;
D, the stand-by mixture that step c is obtained add moulding in model, the demoulding and maintenance, obtain a kind of Light trabs that utilizes printing and dyeing sludge to make.
The prepared Light trabs of technical scheme of application the present embodiment, ultimate compression strength is 80MPa, heat transfer coefficient 0.75w/ (m
2K), unit weight is 300kg/m
3Drying shrinkage 0.022%.
Embodiment 3
A kind of Light trabs that utilizes printing and dyeing sludge to make, it comprises the raw material of following weight part: 35 parts of printing and dyeing sludges, 35 parts of building wastes, 30 parts of feldspars in powder, 20 parts, flyash, 15 parts of pearlstones, 45 parts of cement.
Printing and dyeing sludge is taken from Dongguan printing and dyeing mill.
Building waste is taken from the construction site, Guangzhou, is mainly 20 parts of 5 parts of bricks, 5 parts, stone, 5 parts, soil and concrete blockss.
The particle diameter of feldspar in powder is below 100 orders.
Flyash is the desulfurized powder coal ash.
Cement is ordinary Portland cement.
A kind of manufacture method of utilizing the Light trabs of printing and dyeing sludge manufacturing, it comprises the following steps:
A, the building waste of above-mentioned formula ratio is crushed to below 200 orders, with printing and dyeing sludge, the feldspar in powder of above-mentioned formula ratio, mixes rear granulation,, 1400 ℃ of roastings 100 minutes, obtain roasting particle after cooling;
B, the roasting particle that step a is obtained and cement, flyash and the pearlstone of above-mentioned formula ratio stir in stirrer, obtain mixture;
C, add the water that accounts for step b mixture 18% weight percent to continue to be stirred to evenly, obtain stand-by mixture;
D, the stand-by mixture that step c is obtained add moulding in model, the demoulding and maintenance, obtain a kind of Light trabs that utilizes printing and dyeing sludge to make.
The prepared Light trabs of technical scheme of application the present embodiment, ultimate compression strength is 120MPa, heat transfer coefficient 0.80w/ (m
2K), unit weight is 360kg/m
3Drying shrinkage 0.019%.
Embodiment 4
A kind of Light trabs that utilizes printing and dyeing sludge to make, it comprises the raw material of following weight part: 50 parts of printing and dyeing sludges, 30 parts of building wastes, 50 parts of feldspars in powder, 40 parts, flyash, 40 parts of pearlstones, 40 parts of cement.
Building waste is taken from the construction site, Dongguan, is mainly 30 parts of concrete blockss.
Printing and dyeing sludge is taken from Dongguan printing and dyeing mill.
The particle diameter of feldspar in powder is below 100 orders.
Flyash is the desulfurized powder coal ash.
Cement is ordinary Portland cement.
A kind of manufacture method of utilizing the Light trabs of printing and dyeing sludge manufacturing, it comprises the following steps:
A, the building waste of above-mentioned formula ratio is crushed to below 200 orders, with printing and dyeing sludge, the feldspar in powder of above-mentioned formula ratio, mixes rear granulation,, 1500 ℃ of roastings 120 minutes, obtain roasting particle after cooling;
B, the roasting particle that step a is obtained and cement, flyash and the pearlstone of above-mentioned formula ratio stir in stirrer, obtain mixture;
C, add the water that accounts for step b mixture 20% weight percent to continue to be stirred to evenly, obtain stand-by mixture;
D, the stand-by mixture that step c is obtained add moulding in model, the demoulding and maintenance, obtain a kind of Light trabs that utilizes printing and dyeing sludge to make.
The prepared Light trabs of technical scheme of application the present embodiment, ultimate compression strength is 100MPa, heat transfer coefficient 0.75w/ (m
2K), unit weight is 320kg/m
3Drying shrinkage 0.023%.
The above embodiment, it is preferred embodiments of the present invention, be not to limit the scope of the present invention,, therefore all equivalences of doing according to the described structure of the present patent application the scope of the claims, feature and principle change or modify, all should comprise in patent claim of the present invention.
Claims (7)
1. Light trabs that utilizes printing and dyeing sludge to make, it is characterized in that: it comprises the raw material of following weight part:
Printing and dyeing sludge 30-50 part
Building waste 30-50 part
Feldspar in powder 30-50 part
Flyash 10-40 part
Pearlstone 10-40 part
Cement 40-60 part,
Utilize the manufacture method of the Light trabs of printing and dyeing sludge manufacturing, it comprises the following steps:
A, the building waste of above-mentioned formula ratio is crushed to below 200 orders, with printing and dyeing sludge, the feldspar in powder of above-mentioned formula ratio, mixes rear granulation,, at 1150-1500 ℃ of roasting 20-120 minute, obtain roasting particle after cooling;
B, the roasting particle that step a is obtained and cement, flyash and the pearlstone of above-mentioned formula ratio stir in stirrer, obtain mixture;
C, add the water that accounts for step b mixture 5%-20% weight percent to continue to be stirred to evenly, obtain stand-by mixture;
D, the stand-by mixture that step c is obtained add moulding in model, the demoulding and maintenance, obtain a kind of Light trabs that utilizes printing and dyeing sludge to make.
2. a kind of Light trabs that utilizes printing and dyeing sludge to make according to claim 1, it is characterized in that: it comprises the raw material of following weight part:
Printing and dyeing sludge 30-40 part
Building waste 40-50 part
Feldspar in powder 30-40 part
Flyash 10-30 part
Pearlstone 10-30 part
Cement 40-50 part.
3. a kind of Light trabs that utilizes printing and dyeing sludge to make according to claim 1, it is characterized in that: it comprises the raw material of following weight part:
35 parts of printing and dyeing sludges
35 parts of building wastes
30 parts of feldspars in powder
20 parts, flyash
15 parts of pearlstones
45 parts of cement.
4. according to claim 1-3 described a kind of Light trabses that utilize printing and dyeing sludge to make of any one is characterized in that: described building waste be brick, watt, one or more in stone, soil and concrete blocks mix in any proportion.
5. according to claim 1-3 described a kind of Light trabses that utilize printing and dyeing sludge to make of any one, it is characterized in that: the particle diameter of described feldspar in powder is below 100 orders.
6. according to claim 1-3 described a kind of Light trabses that utilize printing and dyeing sludge to make of any one, it is characterized in that: described flyash is the desulfurized powder coal ash.
7. according to claim 1-3 described a kind of Light trabses that utilize printing and dyeing sludge to make of any one, it is characterized in that: described cement is ordinary Portland cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101677650A CN102329118B (en) | 2011-06-21 | 2011-06-21 | Lightweight wallboard manufactured by utilizing printing and dyeing sludge and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101677650A CN102329118B (en) | 2011-06-21 | 2011-06-21 | Lightweight wallboard manufactured by utilizing printing and dyeing sludge and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102329118A CN102329118A (en) | 2012-01-25 |
| CN102329118B true CN102329118B (en) | 2013-11-20 |
Family
ID=45481110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101677650A Expired - Fee Related CN102329118B (en) | 2011-06-21 | 2011-06-21 | Lightweight wallboard manufactured by utilizing printing and dyeing sludge and manufacturing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN102329118B (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107539A (en) * | 1994-02-24 | 1995-08-30 | 周丙辉 | Light porous composite wall partition |
| CN101519292A (en) * | 2009-01-15 | 2009-09-02 | 梁林华 | Grey brick mechanically manufactured from lime sludge and construction wastes and method for manufacturing same |
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2011
- 2011-06-21 CN CN2011101677650A patent/CN102329118B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN102329118A (en) | 2012-01-25 |
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Owner name: GUANGDONG YUANSHENG ECOLOGICAL ENVIRONMENTAL PROTE Free format text: FORMER OWNER: DONGGUAN BAOYUANDA REAL ESTATE DEVELOPMENT CO.,LTD. Effective date: 20140509 |
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Effective date of registration: 20140509 Address after: Hong Mei Zhen Hong Wu Wo Cun 523000 Guangdong city of Dongguan Province Patentee after: GUANGDONG YUANSHENG ECOLOGICAL ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Address before: 523000 Guangdong city of Dongguan Province Hong Mei Town Yingbin Road No. three West Dongguan Bao source of Real Estate Development Company Limited Patentee before: Dongguan Baoyuanda Real Estate Development Co.,Ltd. |
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Address after: Hong Mei Zhen Hong Wu Wo Cun 523000 Guangdong city of Dongguan Province Patentee after: Guangdong spring ecological science and Technology Group Co.,Ltd. Address before: Hong Mei Zhen Hong Wu Wo Cun 523000 Guangdong city of Dongguan Province Patentee before: GUANGDONG YUANSHENG ECOLOGICAL ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. |
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Granted publication date: 20131120 |