Changyuan Changtong (CYCT) is a national high-tech enterprise with over 20 years of dedicated expertise in the corrosion protection sector. Founded in 2000, the company has consistently focused on cutting-edge industry technologies. Headquartered in Guangming District, Shenzhen, it operates a 45,000 ㎡ advanced new materials industrial base in Dongguan. CYCT stands as a benchmark domestic enterprise integrating robust technical capabilities and large-scale production capacity within China’s corrosion protection industry.
The company boasts comprehensive authoritative qualifications. It has been recognized as a Specialized, Refined, Unique and Innovative "Little Giant" Enterprise and undertakes the construction of the Guangdong Provincial Engineering Technology Research Center for Clean Energy New Materials. CYCT holds Class B General Contractor Qualification for Petrochemical Engineering and Class A Professional Contractor Qualification for Waterproofing, Anti-corrosion and Thermal Insulation Engineering. It has obtained dual factory and product certifications from China Classification Society (CCS), German DVGW certification, qualification as a non-destructive testing institution and Magnetic Flux Leakage (MFL) inspection credential, as well as Class A Qualification and Design Qualification for China’s corrosion control industry. Moreover, the company has passed an array of system certifications including ISO9001, ISO14001, ISO45001, IATF16949, UL224 flame retardant certification, CNAS L4049 laboratory accreditation, GB/T 36132 Green Factory certification, Zero Carbon Factory certification, corporate ESG management certification and after-sales service management certification, forming a full-spectrum matrix of authoritative credentials covering all operational procedures.
In terms of technological innovation, CYCT owns more than 100 pieces of independent intellectual property rights including authorized invention patents. It has led or participated in the formulation of over 20 international, national, industrial and association standards, and received prestigious industry honors such as the Second Prize of Shenzhen Science and Technology Progress Award, Science and Technology Progress Award from the Chinese Society for Corrosion and Protection, and Science and Technology Progress Award from China Machinery Industry Federation. Its R&D strength ranks among the top tier nationwide.
For business layout, the company concentrates on four high-standard application sectors: oil and gas pipelines, marine engineering, power plants and chemical plants. It delivers full industrial chain services, consisting of a full range of new corrosion protection materials, integrated corrosion control solutions, professional engineering technical services for corrosion prevention, R&D and manufacturing of new materials, as well as digital intelligent full-lifecycle monitoring and operation & maintenance services. CYCT delivers all-scenario, full-cycle corrosion protection support for critical infrastructure in energy and chemical industries, empowering clients to achieve safe, efficient, eco-friendly and sustainable development.
About Us
Company Profile
Company Profile
A leading enterprise in the global corrosion protection industry
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26year
Deeply engaged in the field of corrosion protection -
Nearly 100item
Authorized invention patents and other independent intellectual property rights -
20standards
International, national and industrial standards led and participated in formulation -
10piece
Serve the country -
200enterprise
Number of Cooperative Customers
Corporate Vision
Corporate Vision
To become a leading enterprise in the global corrosion protection industry
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Corporate Mission
Make Life Safer -
Core Values
Integrity, Pragmatism, Professionalism, Innovation -
Corporate Culture
Dual-high Culture, Learning-oriented Organization, Career Partner Platform
Development History
2000
- The company was officially registered and established on May 8, 2000 under the original name of Shenzhen Changyuan Changtong Heat Shrinkable Materials Co., Ltd., starting its business in Nanshan District Science and Technology Park.
2005
- Shifted focus to the petroleum and petrochemical sector. The pipeline heat-shrink anti-corrosion products passed the appraisal of scientific and technological achievements of Shenzhen City and won the Third Prize for Scientific and Technological Progress from the China Machinery Industry Federation, gaining initial recognition in the industry.
- Launched the project of PET casing products, marking the company’s first foray into a brand-new product field beyond pipeline anti-corrosion.
2008
- Won the bid for PetroChina's Second West-to-East Gas Transmission Pipeline Project and successfully joined its core supplier list, consolidating the company's standing in the industry on two fronts.
2010
- The company was renamed Shenzhen Changyuan Changtong New Materials Co., Ltd.
2012
- Promoted to Class I Supplier of heat-shrink anti-corrosion materials for PetroChina. Two new products, viscoelastic body and pressure-sensitive tape, passed the appraisal of scientific and technological achievements, marking remarkable results in new product development.
2013
- The company became a council member unit of the industry association and obtained anti-corrosion construction qualifications, realizing an upgrade from product supply to integrated services. In the same year, its high-temperature heat-shrinkable tape passed the authoritative DVGW certification of Germany, granting access to high-end international markets; its viscoelastic product won the First Prize for Scientific and Technological Progress awarded by the Chinese Society for Corrosion and Protection.
2014
- The company was renamed Changyuan Changtong New Materials Co., Ltd.
2015
- The company was renamed Changyuan Changtong New Materials Joint Stock Co., Ltd.
2017
- Listed on the National Equities Exchange and Quotations (NEEQ), stock code: 836349. The company hosted the 1st National Technical Exchange Conference on Oil & Gas Pipeline Corrosion and Protection Management, jointly building a technical exchange platform for oil and gas pipeline operators in the field of corrosion protection.
- Awarded the Second Class Prize of Shenzhen Science and Technology Progress Award (2015) issued by the Shenzhen Municipal People's Government.
- Obtained the Assessment Certificate for Petrochemical Pipeline Network Service Organizations issued by China Classification Society (CCS).
2019
- The production base was relocated to Dongkeng, Dongguan, unlocking new opportunities for development.
2020
- Shareholders completed equity transfer, forming a new pattern of corporate governance and ushering in a new development era.
- Obtained the Grade-I Professional Contractor Qualification for Waterproof, Anti-corrosion and Thermal Insulation Projects.
2023
- It has successively obtained municipal-level certifications including Specialized, Refined, Differential and Innovative Enterprise. A number of new products have passed scientific and technological achievement appraisal and won the Second Prize of Industry Science and Technology Progress. The construction of Xiegang New Materials Industrial Park has started, laying a spatial foundation for long-term development.
2025
- The company invested in expanding its irradiation center with three additional electron accelerator production lines to upgrade production capacity. Three subsidiaries were established, namely Superelastic Technology, Pipeline Protection Digital Intelligence Technology and Yuchen Engineering Technology, marking the strategic layout to march into new energy, new materials and smart pipeline sectors. The full relocation to the Dongguan New Materials Industrial Park was completed, forming a new landscape for all-round corporate development. In 2025, the enterprise was honored as a National Specialized, Refined, Differential and Innovative "Little Giant" Enterprise, adding a glorious footnote to its 25-year journey.
Qualifications & Honors
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Honorary Certificates -
Patent Certificates -
Qualifications & Certifications -
Industry-University-Research Cooperation
Excellent Quality Management Award of 2019
Excellent Safety Management Award
High-Quality Contractor
Winning Unit
40-Year Contribution Award of Chinese Society for Corrosion and Protection
Excellent Supplier of 2019
Advanced Contractor
Excellent Contractor
Excellent Project Management Award (Yidu)
2024 Excavation and Re-shooting Construction Project for Circumferential Weld Quality Risk Inspection of Hefei Gas Transmission Branch
Non-Stretch Heat-Shrink Tape Substrate for Pipeline Anticorrosion and Its Preparation Method
Flame-Retardant Eco-Friendly PET Heat-Shrinkable Material and Its Preparation Method
Boiling Water Resistant and High Temperature Resistant Polyester Heat-Shrinkable Material and Its Preparation Method
Anticorrosive Viscoelastic Tape and Its Preparation Method
A High-Density High-Temperature Heat-Shrinkable Pressure-Sensitive Tape and Its Preparation Method
Modified Solvent-Free Epoxy Wear-Resistant Coating for FRP and Its Preparation Method
A high shrinkage ratio heat-shrinkable sleeve resistant to diesel and kerosene for optical cable joint sealing and its preparation method
A Termite-Resistant Tape Substrate for Polyethylene Pipes and Its Preparation Method
A Substrate Material for High-Density High-Temperature Heat-Shrinkable Pressure-Sensitive Tape and Its Preparation Method
A Polyethylene Pipe Termite-Proof Adhesive Tape Substrate and Its Preparation Method
A hot melt adhesive for high temperature resistant radiation crosslinked polypropylene heat shrink tape, heat shrink tape and preparation method thereof
Automatic Winding and Packaging Equipment for Heat-Shrink Sheets
Solvent-Free Polyaspartic Polyurea Coating, Its Preparation Method and Application
A Vibration Model Establishment Method Applied to Optical Fiber Sensing Systems
Preparation Method of Class F Temperature-Resistant Polyester Heat-Shrinkable Material and Heat-Shrinkable Tube for Electrical Applications
A Halogen-Free Flame-Retardant F-Class Temperature Resistant Polyester Heat-Shrinkable Tube for Electrical Use and Preparation Method Thereof
Radiation Crosslinked Polypropylene Heat-Shrink Tape for Anticorrosion Joints of Subsea Pipelines and Preparation Method Thereof
A Puncture-Resistant PET Heat-Shrink Tubing Material and Preparation Method Thereof
A High Temperature and Humidity Resistant PET Heat-Shrink Tubing Material and Its Preparation Method
An Automatic Winding Device
A Device for Position Detection and Burial Depth Measurement of Buried Steel Pipes
A Low-Temperature Resistant Two-Component Solvent-Free Epoxy Coating for Pipeline Field Joint Coating
Multi-channel Acquisition System for Potential Collector
Hose Positioning Device for PET Adhesive Hose Printing Machine
Water Filter Device for PET Heat-Shrink Adhesive Tube Extruder
Anti-Corrosion Heat-Shrink Component for Pipe Tees
Anti-Corrosion Sealing Heat-Shrink Components for Cable-stayed Bridge Steel Cable Connection Base
An Anti-Corrosion Heat-Shrink Component
A Hot Melt Adhesive Coating Device
Automatic Winding and Packaging Equipment for Heat-Shrink Sheets
A Hot Melt Adhesive Coating Device for Tubular Heat-Shrink Sleeves
A Mold for Manufacturing Heat-Shrink Waterproof Caps
Specialized, Sophisticated, Unique and Innovative Small and Medium-sized Enterprises
Specialized, Refined, Unique and Innovative Little Giant Enterprise
Work Safety License
High-tech Enterprise Certificate
First-Class Professional Contractor for Waterproofing, Anticorrosion and Thermal Insulation Engineering
MFL Certificate
Grade Evaluation Certificate of Non-Destructive Testing Institution
China Corrosion Control Qualification Certificate
China Corrosion Control Design Qualification Certificate
China Corrosion Control Safety Certificate
CNAS Accreditation Decision Document
Enterprise Director Certificate of Chinese Society for Corrosion and Protection
Comprehensive Intelligent Early Warning System Monitoring Software
Intelligent Cathodic Protection Monitoring System
Mini Program for Intelligent Monitoring of Cathodic Protection
Qualification Certificate of Construction Enterprise
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