Zhejiang Cenway Materials Co., Ltd. - Polyisobutylene & Butyl Rubber Manufacturer With integrated R&D and manufacturing capabilities across two production bases, Cenway supplies a comprehensive range of polyisobutylene and butyl rubber for industrial, food, pharmaceutical, and other specialized applications.
Company Profile
Zhejiang Cenway Materials Co., Ltd. was established in July 2008 in Jiaxing Port District China Chemical New Materials (Jiaxing) Park. Cenway is a new material enterprise integrating R&D, production and sales, incubated by Tsinghua Industrial Development Research Institute.
Cenway has two factories in Zhejiang and Liaoning provinces, and is the only company in the world that can simultaneously produce full grades of polyisobutylene and butyl rubber.
Based on the C4 industry chain, Cenway adheres to the customer value-driven innovation concept, focuses on technological progress, and is determined to become a supplier of new material products and solutions for high-growth industries.
Built on Four Commitments
High Quality
Advanced Equipment
Professional Team
Custom Service
Why Choose Us?
Zhejiang factory can produce full grades of both industrial grade and food grade medium molecular weight polyisobutylene and butyl rubber.
Panjin factory can produce full grades of high molecular weight polyisobutylene and pharmaceutical grade butyl rubber.
Recognized & Certified
Our production and quality systems are verified by international standards and independent bodies.
Where Cenway Materials Perform
Our full-grade polyisobutylene and butyl rubber serve demanding industries worldwide - from adhesives and lubricants to food, pharma and infrastructure.
Adhesives & Sealants
Medium- and high-MW PIB delivers tack, cohesion and water resistance in pressure-sensitive adhesives, construction sealants and industrial caulks.
Lubricants & Motor Oil Additives
PIB-based viscosity index improvers and dispersants enhance lubricant stability, shear resistance and low-temperature performance.
Chewing Gum Base (Food Grade)
Food-grade medium-MW PIB is a core base ingredient for chewing gum, meeting strict global food-safety standards.
Tire & Rubber Inner Liners
Butyl rubber derived from our PIB provides outstanding air retention for tire inner liners, tubes and membranes.
Construction & Roofing Membranes
PIB sealants and waterproofing membranes deliver long-term weatherproofing for roofing, glazing and building facades.
Personal Care & Cosmetics
Cosmetic-grade PIB improves texture, spreadability and water resistance in lip care, balms and skin formulations.
Chemistry Lights Up a Green Future
Sustainability is integrated into our business strategy, manufacturing processes, and long-term development. We continuously improve energy efficiency, optimize our energy structure, and reduce environmental impact through chemical innovation, process optimization, and renewable energy adoption.
Our sustainability practices are supported by recognized environmental and energy management systems, carbon verification, and life cycle assessment.
Our Sustainability Commitments
Energy Efficiency
Improve energy efficiency and reduce unit energy consumption through process and technology optimization.
Green Manufacturing
Promote cleaner production, renewable energy adoption, and continuous improvement across manufacturing operations.
Carbon Management
Strengthen greenhouse gas management through carbon disclosure, emissions verification, and life cycle assessment.
Environmental Management
Operate under established environmental management systems and continuously improve resource and environmental performance.
Recognized Standards & Achievements
Independently audited and certified environmental, energy and carbon management.
Let's Build a Sustainable Future Together
Partner with Cenway for full-grade polyisobutylene and butyl rubber solutions - backed by certified quality and responsible manufacturing.