... SERIESRing materialChrome Steel ,Carbon steel,Stainless steelCage materialNylon , steel , brassPrecisionP0,P6,P5,P4SealingOpen,Z,2Z,RS,2RSQuality standardISO9001:2000 standardServiceOEM serviceDelivery ... Home page : Fax: 0086-025-87793008Tel: 0086-15212233334 EE350750/EE351687/P6