ShangHai ZeFeng Industrial Co.,LTD locates in one of the largest financial centre Shanghai in the world. Our Company has been making the superior polyurethane sealing products for almost 10 years and is a modernized enterprise for rubber seal with whole line of R&D,production and marketing. Experienced workers and modern equipments ensure products quality and lead time.We have worked with several famous cylinder factories in china and the products are popular. Our global sales network covers ...