The project of 100,000 tons of polyester filament and 250,000 tons of polyester chip for Zhejiang Sanwei Rubber Item Co., Ltd. is basically completed and will go into operation in September. As a key project in Zhejiang Province in 2019, the project has a total investment of RMB 1.09 billion yuan and covers an area of 205 acres. 

In the ranking of China's rubber industry enterprises in 2020, the two leading products of Sanwei - rubber V-belts and conveyor belts - are ranked third in the country.

In 2017, Sanwei started the "Rubber Industrial Park" project, including the combined heat and power project (the first phase has launched on July 1, 2020), 100,000 tons of polyester filament and 250,000 tons of polyester chips, 200 million Am rubber V-belt intelligent technology transformation and reconstruction, 100,000 tons of SBR projects.