Made according to ISO 3601,AS 568A,DIN3771, JIS B2401and NSF,WRAS,DVGW,FDA and ROHS approved. 1. Offer a wide range of Plastic ball in all standard size and a lot of special size. 2. All products are made according to international standard: ISO 3601, AS 568A, DIN3771, JIS B2401.3. Our products are of NSF, WRAS, DVGW, FDA and ROHS approved.4. Various materials and hardness for your option, ...