CN105000909A - Preparation method for environment-friendly stone deruster - Google Patents

Preparation method for environment-friendly stone deruster Download PDF

Info

Publication number
CN105000909A
CN105000909A CN201510508953.3A CN201510508953A CN105000909A CN 105000909 A CN105000909 A CN 105000909A CN 201510508953 A CN201510508953 A CN 201510508953A CN 105000909 A CN105000909 A CN 105000909A
Authority
CN
China
Prior art keywords
parts
preparation
rust remover
stirrer
environment friendly
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.)
Granted
Application number
CN201510508953.3A
Other languages
Chinese (zh)
Other versions
CN105000909B (en
Inventor
李康
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Kaixin Environmental Protection Materials Co ltd
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201510508953.3A priority Critical patent/CN105000909B/en
Publication of CN105000909A publication Critical patent/CN105000909A/en
Application granted granted Critical
Publication of CN105000909B publication Critical patent/CN105000909B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

The invention discloses a preparation method for an environment-friendly stone deruster. The preparation method comprises the following steps: placing hydrochloric acid, an emulsifier, triethavolamine, zinc stearate and thiourea dioxide into a stirring machine in parts by weight, and stirring at the temperature of 40-60 DEG C; adding hexamethylenetetramine, ammonium molybdate, benzotriazole, isobornyl acrylate, dibutyl phthalate and ethylene diamine tetramethylene phosphonic acid, heating to 60-80 DEG C within 3-6 min, performing ultrasonic treatment for 10-15 min, cooling to 40-60 DEG C, and continuously performing ultrasonic treatment for 10-15 min; placing the mixture into the stirring machine, and stirring at the ordinary temperature to obtain the environment-friendly stone deruster. The derusting performance of the deruster prepared by the method is improved, and the deruster has no impact on the surface of stone, meanwhile is simple in preparation process, avoids environment pollution, and has an excellent market prospect.

Description

A kind of preparation method of environment friendly stone rust remover
Technical field
The present invention relates to the rust cleaning technology of stone material, particularly a kind of preparation method of environment friendly stone rust remover.
Background technology
Stone material rust remover be exactly adopt the stone material chemical cleaning products of specialty by the natural rust staining on stone material top layer and shallow top layer and the day after tomorrow rust staining clean out, to recover the texture of stone material itself, outward appearance and decorative effect.
Rhombohedral iron ore and sulfurous iron ore is all contained in the Matter Composition of stone material inside, these iron mineral ingresss of air are oxidized and after generating ferric oxide (iron rust), oozed out by the pore of stone material, stone material in use inevitably touches iron article simultaneously, residual being stained with of these irony article is applied at stone surface, and oxidized rear formation iron rust pollutes.
Existing rust remover, while rust cleaning, easily produces the surface of stone material and destroys, produce and pollute, affect the work-ing life of stone material to environment.CN1532271A discloses a kind of stone material rust remover and preparation method thereof; component is organic acid, silicone oil, tensio-active agent, filtered water; organic acid of the present invention is weak acid; and tensio-active agent can make sour rapid osmotic inner to stone material; with the iron generation effect of stone material inside; silicone oil can make stone surface form adsorption film, protection stone material true qualities.CN104086222A discloses a kind of stone material rust remover, be made up of the feed composition of following number: 40 ~ 45 parts of phosphoric acid, 25 ~ 30 parts of boric acid, 15 ~ 20 parts of acetic acid, 10 ~ 12 parts of tartrate, 5 ~ 8 parts of silicon-dioxide, 8 ~ 10 parts of diatom oozes, 10 ~ 12 parts of gacs, 8 ~ 12 parts of silica powders, 15 ~ 20 parts of paraffin oils, 5 ~ 8 parts of polydimethylsiloxanes, 3 ~ 5 parts of polyoxyethylene 20 sorbitan monolaurates, 8 ~ 10 parts of hydroxypropylcelluloses, 50 ~ 80 parts of deionized waters, this stone material rust remover can rapid osmotic inner to stone material, with the iron generation effect of stone material inside.
Summary of the invention
The technical problem that the present invention solves is that provide a kind of preparation method of environment friendly stone rust remover, obtained rust remover can improve rust cleaning performance, does not have an impact to the surface of stone material, and preparation technology is simple simultaneously, can not produce pollute environment.
The technical solution used in the present invention is:
A preparation method for environment friendly stone rust remover, comprises the following steps:
(1) by weight, 51 ~ 73 parts of hydrochloric acid, 3 ~ 19 parts of emulsifying agents, 7 ~ 18 parts of trolamines, 2 ~ 14 parts of Zinic stearass and 9 ~ 15 parts of thiourea peroxides are placed in stirrer, at 40 ~ 60 DEG C of temperature, stir 20 ~ 40min, obtain mixture one;
(2) in step (1) gained mixture one, add 10 ~ 17 parts of hexamethylenetetramines, 1 ~ 6 part of ammonium molybdate, 2 ~ 8 parts of benzotriazoles, 1 ~ 5 part of isobornyl acrylate, 2 ~ 9 parts of dibutyl phthalates and 1 ~ 7 part of ethylenediamine tetramethylene phosphonic acid, 60 ~ 80 DEG C are heated in 3 ~ 6min, ultrasonic 10 ~ 15min, be cooled to 40 ~ 60 DEG C, continue ultrasonic 10 ~ 15min, obtain mixture two;
(3) step (2) gained mixture two is placed in stirrer, after stirring at normal temperature, namely obtains described environment friendly stone rust remover.
In above-mentioned steps (1), emulsifying agent is the one in ethoxylated dodecyl alcohol, sorbitan fatty acid ester, sodium laurylsulfonate.
In above-mentioned steps (1), the rotating speed of stirrer is 150 ~ 300 r/min.
In above-mentioned steps (3), the stirring at normal temperature time is 30 ~ 50min.
In above-mentioned steps (3), the rotating speed of stirrer is 200 ~ 350 r/min.
Beneficial effect: the rust remover that the present invention obtains gently becomes rusty the rust cleaning time between 83 ~ 145s, heavily become rusty the rust cleaning time between 103 ~ 196s, to stone surface without destruction, this is by the synergy between component, can improve rust cleaning performance, not have an impact to the surface of stone material, preparation technology is simple simultaneously, can not produce environment and pollute, there are good market outlook.
Embodiment
Embodiment 1
A preparation method for environment friendly stone rust remover, comprises the following steps:
(1) by weight, 51 parts of hydrochloric acid, 3 parts of ethoxylated dodecyl alcohols, 7 parts of trolamines, 2 parts of Zinic stearass and 9 parts of thiourea peroxides are placed in stirrer, at 40 DEG C of temperature, stir 20min, obtain mixture one, wherein stirrer rotating speed is 150 r/min;
(2) in step (1) gained mixture one, add 10 parts of hexamethylenetetramines, 1 part of ammonium molybdate, 2 parts of benzotriazoles, 1 part of isobornyl acrylate, 2 parts of dibutyl phthalates and 1 part of ethylenediamine tetramethylene phosphonic acid, 60 DEG C are heated in 3min, ultrasonic 10min, be cooled to 40 DEG C, continue ultrasonic 10min, obtain mixture two;
(3) step (2) gained mixture two is placed in stirrer, namely obtains described environment friendly stone rust remover after stirring at normal temperature 30min, wherein stirrer rotating speed is 200r/min.
Embodiment 2
A preparation method for environment friendly stone rust remover, comprises the following steps:
(1) by weight, 73 parts of hydrochloric acid, 19 parts of sorbitan fatty acid esters, 18 parts of trolamines, 14 parts of Zinic stearass and 15 parts of thiourea peroxides are placed in stirrer, at 60 DEG C of temperature, stir 40min, obtain mixture one, wherein stirrer rotating speed is 300 r/min;
(2) in step (1) gained mixture one, add 17 parts of hexamethylenetetramines, 6 parts of ammonium molybdates, 8 parts of benzotriazoles, 5 parts of isobornyl acrylate, 9 parts of dibutyl phthalates and 7 parts of ethylenediamine tetramethylene phosphonic acids, 80 DEG C are heated in 6min, ultrasonic 15min, be cooled to 60 DEG C, continue ultrasonic 15min, obtain mixture two;
(3) step (2) gained mixture two is placed in stirrer, namely obtains described environment friendly stone rust remover after stirring at normal temperature 50min, wherein stirrer rotating speed is 350 r/min.
Embodiment 3
A preparation method for environment friendly stone rust remover, comprises the following steps:
(1) by weight, 55 parts of hydrochloric acid, 7 parts of sodium laurylsulfonates, 9 parts of trolamines, 4 parts of Zinic stearass and 11 parts of thiourea peroxides are placed in stirrer, at 45 DEG C of temperature, stir 25min, obtain mixture one, wherein stirrer rotating speed is 200 r/min;
(2) in step (1) gained mixture one, add 11 parts of hexamethylenetetramines, 3 parts of ammonium molybdates, 3 parts of benzotriazoles, 2 parts of isobornyl acrylate, 3 parts of dibutyl phthalates and 3 parts of ethylenediamine tetramethylene phosphonic acids, 65 DEG C are heated in 4min, ultrasonic 11min, be cooled to 45 DEG C, continue ultrasonic 12min, obtain mixture two;
(3) step (2) gained mixture two is placed in stirrer, namely obtains described environment friendly stone rust remover after stirring at normal temperature 35min, wherein stirrer rotating speed is 250 r/min.
Embodiment 4
A preparation method for environment friendly stone rust remover, comprises the following steps:
(1) by weight, 71 parts of hydrochloric acid, 16 parts of ethoxylated dodecyl alcohols, 15 parts of trolamines, 12 parts of Zinic stearass and 13 parts of thiourea peroxides are placed in stirrer, at 55 DEG C of temperature, stir 35min, obtain mixture one, wherein stirrer rotating speed is 270 r/min;
(2) in step (1) gained mixture one, add 16 parts of hexamethylenetetramines, 5 parts of ammonium molybdates, 6 parts of benzotriazoles, 4 parts of isobornyl acrylate, 7 parts of dibutyl phthalates and 6 parts of ethylenediamine tetramethylene phosphonic acids, 75 DEG C are heated in 5min, ultrasonic 12min, be cooled to 55 DEG C, continue ultrasonic 14min, obtain mixture two;
(3) step (2) gained mixture two is placed in stirrer, namely obtains described environment friendly stone rust remover after stirring at normal temperature 45min, wherein stirrer rotating speed is 300 r/min.
Embodiment 5
A preparation method for environment friendly stone rust remover, comprises the following steps:
(1) by weight, 65 parts of hydrochloric acid, 14 parts of ethoxylated dodecyl alcohols, 12 parts of trolamines, 8 parts of Zinic stearass and 11 parts of thiourea peroxides are placed in stirrer, at 50 DEG C of temperature, stir 30min, obtain mixture one, wherein stirrer rotating speed is 200 r/min;
(2) in step (1) gained mixture one, add 14 parts of hexamethylenetetramines, 4 parts of ammonium molybdates, 6 parts of benzotriazoles, 3 parts of isobornyl acrylate, 4 parts of dibutyl phthalates and 5 parts of ethylenediamine tetramethylene phosphonic acids, 70 DEG C are heated in 4min, ultrasonic 13min, be cooled to 50 DEG C, continue ultrasonic 12min, obtain mixture two;
(3) step (2) gained mixture two is placed in stirrer, namely obtains described environment friendly stone rust remover after stirring at normal temperature 40min, wherein stirrer rotating speed is 300 r/min.
Comparative example 1
Do not add isobornyl acrylate with the difference of embodiment 5.
A preparation method for environment friendly stone rust remover, comprises the following steps:
(1) by weight, 65 parts of hydrochloric acid, 14 parts of ethoxylated dodecyl alcohols, 12 parts of trolamines, 8 parts of Zinic stearass and 11 parts of thiourea peroxides are placed in stirrer, at 50 DEG C of temperature, stir 30min, obtain mixture one, wherein stirrer rotating speed is 200 r/min;
(2) in step (1) gained mixture one, add 14 parts of hexamethylenetetramines, 4 parts of ammonium molybdates, 6 parts of benzotriazoles, 4 parts of dibutyl phthalates and 5 parts of ethylenediamine tetramethylene phosphonic acids, 70 DEG C are heated in 4min, ultrasonic 13min, be cooled to 50 DEG C, continue ultrasonic 12min, obtain mixture two;
(3) step (2) gained mixture two is placed in stirrer, namely obtains described environment friendly stone rust remover after stirring at normal temperature 40min, wherein stirrer rotating speed is 300 r/min.
Comparative example 2
Do not add dibutyl phthalate with the difference of embodiment 5.
A preparation method for environment friendly stone rust remover, comprises the following steps:
(1) by weight, 65 parts of hydrochloric acid, 14 parts of ethoxylated dodecyl alcohols, 12 parts of trolamines, 8 parts of Zinic stearass and 11 parts of thiourea peroxides are placed in stirrer, at 50 DEG C of temperature, stir 30min, obtain mixture one, wherein stirrer rotating speed is 200 r/min;
(2) in step (1) gained mixture one, add 14 parts of hexamethylenetetramines, 4 parts of ammonium molybdates, 6 parts of benzotriazoles, 3 parts of isobornyl acrylate and 5 parts of ethylenediamine tetramethylene phosphonic acids, 70 DEG C are heated in 4min, ultrasonic 13min, be cooled to 50 DEG C, continue ultrasonic 12min, obtain mixture two;
(3) step (2) gained mixture two is placed in stirrer, namely obtains described environment friendly stone rust remover after stirring at normal temperature 40min, wherein stirrer rotating speed is 300 r/min.
Performance test:
The rust remover of embodiment 1 ~ 5 and comparative example 1 ~ 2 gained is carried out Performance Detection, and result is as following table:
Time of wherein eliminating rust is after being soaked in rust remover by stone material, and range estimation surface is without the time of rusty stain
As can be seen from the above table: the rust remover that embodiment 1 ~ 5 obtains gently becomes rusty the rust cleaning time between 83 ~ 145s, the rust cleaning time is heavily become rusty between 103 ~ 196s, to stone surface without destruction; Do not add isobornyl acrylate in comparative example 1, obtained rust remover gently becomes rusty rust cleaning time >5min, produces destroy in heavily become rusty rust cleaning time >10min, 20min to stone surface; Do not add thiourea peroxide in comparative example 2, obtained rust remover gently becomes rusty rust cleaning time >5min, and heavily become rusty rust cleaning time >15min, to stone surface without destruction.It can thus be appreciated that, the stupalith that the present invention obtains be due to component between synergy, can improve rust cleaning performance, not have an impact to the surface of stone material, simultaneously preparation technology is simple, can not produce and pollute, have good market outlook to environment.

Claims (5)

1. a preparation method for environment friendly stone rust remover, is characterized in that, comprises the following steps:
(1) by weight, 51 ~ 73 parts of hydrochloric acid, 3 ~ 19 parts of emulsifying agents, 7 ~ 18 parts of trolamines, 2 ~ 14 parts of Zinic stearass and 9 ~ 15 parts of thiourea peroxides are placed in stirrer, at 40 ~ 60 DEG C of temperature, stir 20 ~ 40min, obtain mixture one;
(2) in step (1) gained mixture one, add 10 ~ 17 parts of hexamethylenetetramines, 1 ~ 6 part of ammonium molybdate, 2 ~ 8 parts of benzotriazoles, 1 ~ 5 part of isobornyl acrylate, 2 ~ 9 parts of dibutyl phthalates and 1 ~ 7 part of ethylenediamine tetramethylene phosphonic acid, 60 ~ 80 DEG C are heated in 3 ~ 6min, ultrasonic 10 ~ 15min, be cooled to 40 ~ 60 DEG C, continue ultrasonic 10 ~ 15min, obtain mixture two;
(3) step (2) gained mixture two is placed in stirrer, after stirring at normal temperature, namely obtains described environment friendly stone rust remover.
2. the preparation method of environment friendly stone rust remover according to claim 1, is characterized in that: in described step (1), emulsifying agent is the one in ethoxylated dodecyl alcohol, sorbitan fatty acid ester, sodium laurylsulfonate.
3. the preparation method of environment friendly stone rust remover according to claim 1, is characterized in that: in described step (1), the rotating speed of stirrer is 150 ~ 300 r/min.
4. the preparation method of environment friendly stone rust remover according to claim 1, is characterized in that: in described step (3), the stirring at normal temperature time is 30 ~ 50min.
5. the preparation method of environment friendly stone rust remover according to claim 1, is characterized in that: in described step (3), the rotating speed of stirrer is 200 ~ 350 r/min.
CN201510508953.3A 2015-08-19 2015-08-19 A kind of preparation method of environment friendly stone rust remover Active CN105000909B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510508953.3A CN105000909B (en) 2015-08-19 2015-08-19 A kind of preparation method of environment friendly stone rust remover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510508953.3A CN105000909B (en) 2015-08-19 2015-08-19 A kind of preparation method of environment friendly stone rust remover

Publications (2)

Publication Number Publication Date
CN105000909A true CN105000909A (en) 2015-10-28
CN105000909B CN105000909B (en) 2017-06-13

Family

ID=54373827

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510508953.3A Active CN105000909B (en) 2015-08-19 2015-08-19 A kind of preparation method of environment friendly stone rust remover

Country Status (1)

Country Link
CN (1) CN105000909B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110204360A (en) * 2018-10-26 2019-09-06 杭州悦山科技有限公司 A kind of preparation method of environment friendly stone rust remover
CN111662785A (en) * 2020-06-15 2020-09-15 厦门诺恩斯科技有限公司 Mild stone rust remover and preparation method thereof
CN114315428A (en) * 2020-09-29 2022-04-12 航天特种材料及工艺技术研究所 Method for removing rust of porous quartz ceramic wave-transmitting material

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101210330A (en) * 2006-12-28 2008-07-02 朱超强 Rust removing agent
CN102373479A (en) * 2011-10-26 2012-03-14 陈瑜 Steel rust removing liquid
CN103882454A (en) * 2014-03-10 2014-06-25 苏州捷德瑞精密机械有限公司 Steel rust removal fluid and preparation method thereof
CN104087955A (en) * 2014-07-16 2014-10-08 司徒建辉 Efficient normal temperature derusting additive for iron and steel pieces
JP2014205758A (en) * 2013-04-12 2014-10-30 コーデックケミカル株式会社 Cleaning agent composition, cleaning agent comprising the same, and cleaning method using those

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101210330A (en) * 2006-12-28 2008-07-02 朱超强 Rust removing agent
CN102373479A (en) * 2011-10-26 2012-03-14 陈瑜 Steel rust removing liquid
JP2014205758A (en) * 2013-04-12 2014-10-30 コーデックケミカル株式会社 Cleaning agent composition, cleaning agent comprising the same, and cleaning method using those
CN103882454A (en) * 2014-03-10 2014-06-25 苏州捷德瑞精密机械有限公司 Steel rust removal fluid and preparation method thereof
CN104087955A (en) * 2014-07-16 2014-10-08 司徒建辉 Efficient normal temperature derusting additive for iron and steel pieces

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110204360A (en) * 2018-10-26 2019-09-06 杭州悦山科技有限公司 A kind of preparation method of environment friendly stone rust remover
CN110204360B (en) * 2018-10-26 2020-03-10 杭州悦山科技有限公司 Preparation method of environment-friendly rust remover
CN111662785A (en) * 2020-06-15 2020-09-15 厦门诺恩斯科技有限公司 Mild stone rust remover and preparation method thereof
CN114315428A (en) * 2020-09-29 2022-04-12 航天特种材料及工艺技术研究所 Method for removing rust of porous quartz ceramic wave-transmitting material
CN114315428B (en) * 2020-09-29 2024-03-08 航天特种材料及工艺技术研究所 Method for removing rust of porous quartz ceramic wave-transparent material

Also Published As

Publication number Publication date
CN105000909B (en) 2017-06-13

Similar Documents

Publication Publication Date Title
CN105000909A (en) Preparation method for environment-friendly stone deruster
CN103666289B (en) Preparation method for leather gloss agent
CN103820774A (en) Stainless steel pickling passivation cream with high transparency and high viscosity and preparation method thereof
PH12019502732A1 (en) Hair conditioning composition having improved rinsing properties
CN105463857A (en) Environmentally friendly anti-siphon afterfinishing method for suede microfiber synthetic leather
CN109370297A (en) A kind of practical high-efficient environment protection watery paint remover and its preparation method and application
CN103361596B (en) The saline oxide of surface modification treatment
CN107574033A (en) Used in electronic industry aqueous cleaning agent
CN104560426A (en) Environment-friendly degradable cleaning agent and preparation process thereof
CN108544624A (en) A kind of anticorrosion treatment technology of Chinese fir board
CN103710118B (en) A kind of water base cutting cooling antirust liquid and preparation method thereof
CN103695940B (en) A kind of Water-soluble antioxidant derusting rust-proofing liquid and preparation method thereof
CN106498421A (en) A kind of environmentally friendly double-component efficient cryogenic degreasing agent product and its production technology
CN107267995A (en) A kind of steel derusting technique
JP2010083830A (en) Algae outgrowth inhibitor and algae outgrowth suppressing treating method on surface of goods
CN106591855A (en) Metal surface cleaning agent and preparation method thereof
CN103642054B (en) A kind of Production technology for polyvinyl alcohol water-soluble thin film
CN108788938A (en) A kind of woodwork fungus-proof antisepsis treatment process
CN107139299B (en) Process method for improving glossiness of wicker for wickerwork weaving
WO2009154126A1 (en) Method of textile product treatment for water and oil repellency
CN103882445B (en) One can coating derusting rust-proofing liquid and preparation method thereof
CN110204360B (en) Preparation method of environment-friendly rust remover
CN105970618A (en) Antistatic wear-resistant hydrosol finishing agent and preparation method thereof
CN107336309A (en) A kind of Wood craft method for anticorrosion treatment
CN112458470A (en) Novel neutral bright cleaning agent and preparation method and use method thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
CB03 Change of inventor or designer information

Inventor after: Yang Xiaowu

Inventor before: Li Kang

CB03 Change of inventor or designer information
TA01 Transfer of patent application right

Effective date of registration: 20170515

Address after: 221400, Jiangsu, Xuzhou, Xinyi Tong Zhen Ditch Street

Applicant after: XINYI HEGOU INDUSTRIAL CONCENTRATION DISTRICT CONSTRUCTION DEVELOPMENT Co.,Ltd.

Address before: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China

Applicant before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd.

Effective date of registration: 20170515

Address after: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China

Applicant after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd.

Address before: Tongxing road Wenjiang District of Chengdu City, Sichuan province 610000 No. 88 Regent Hong Kong 19 Building 1702

Applicant before: Li Kang

TA01 Transfer of patent application right
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20200609

Address after: 221400 he Gou Zhen Xin Ma Lu Xi, Xinyi City, Xuzhou City, Jiangsu Province

Patentee after: Jiangsu Kaixin environmental protection materials Co.,Ltd.

Address before: 221400, Jiangsu, Xuzhou, Xinyi Tong Zhen Ditch Street

Patentee before: XINYI HEGOU INDUSTRIAL CONCENTRATION DISTRICT CONSTRUCTION DEVELOPMENT Co.,Ltd.

TR01 Transfer of patent right