Zhejiang Ruide Airproof Science & Technology Co.,Ltd has been specialized manufactufing air proof items for many years,and the products are widely used in mechanical industry such as auto. Our company owns more than 300 types of specifications,nice full-automechanical mould and tesing equipments imported from Japan,Taiwan are adopted into our products so our products are well-known as good quality,full kinds,supply in time and compet- itive price.Our products have been exported to Thailand, Malaysia,Philippine,South East Asia,Europe and America etc. 　　The brands of "Ruide","Zhengtong"are listed into "China Top Brands"for its strong power and corresponding quality.