1. Zhejiang Xinhui New Materials Co., Ltd.: 
Registered and established in China Chemical New Materials (Jiaxing) Park in Jiaxing Port Area in July 2008, it is a chemical new materials enterprise integrating R&D, production and sales.
It has two sets of butyl rubber production facilities with an annual output of 100,000 tons in Zhejiang and Panjin, with an annual comprehensive production capacity of 200,000 tons. It is currently China's leading butyl rubber company with leading production capacity and complete product brands.
Using imported supOS industrial operating system and other technologies to promote the integration of "two-industry" and create a green factory.
2. Shandong Hongrui New Materials Technology Co., Ltd.:
A Sino-Hong Kong joint venture established in 2006, it is one of the main manufacturers of polyisobutylene, with the brand HRD.
3. Hangzhou Shunda Group Polymer Materials Co., Ltd.:
As a world-leading polymer materials company, it is the only company in China that produces medium molecular weight polyisobutylene and has many customers at home and abroad.
Located in Qingshan Industrial Park, it can supply polyisobutylene products with an average viscosity of 30,000 and above.
4. PetroChina Co., Ltd.:
With production bases in many places in China, it can achieve large-scale production to meet the needs of domestic and foreign markets.
5. Sinopec Group:
Investing a lot of resources in the research and development and production of high molecular weight polyisobutylene, and continuously launching high-performance products.
6. Panjin Xinhui New Materials Co., Ltd.:
Incorporated in December 2019, it is a wholly-owned subsidiary of Zhejiang Xinhui New Materials Co., Ltd., integrating R&D, production and sales.
Together with Zhejiang Xinhui, it has a butyl rubber production capacity of 200,000 tons/year. The products are widely used. It has passed the high-tech enterprise certification and carried out industry-university-research cooperation with universities.
7. Shanghai Sanaifu New Materials Co., Ltd.:
Focusing on technological innovation and product quality improvement, its high molecular weight polyisobutylene products have a certain market share in some high-end application fields.
8. Jiangsu Yak Technology Co., Ltd.:
9. Dongyue Group Co., Ltd.:
10. Wanhua Chemical Group Co., Ltd.:
A world-renowned chemical new materials company, it is in a leading position in the fields of polyurethane, and is also involved in the production of high molecular weight polyisobutylene.
It has a strong R&D team and innovation capabilities, and can continuously develop high-performance high molecular weight polyisobutylene products according to market demand.