... custom made 2.SGS,EN71,EN14960,ASTM,BS7837 3.germany Tizip Features infor:Welding: Germany made welding ... Guarantee:A, Each ball will be tested for 3 times before leaving factory, the rate of leaking ... free change if any leaking problems within first 3 month; B, Each ball are with repair material ... to repair and replace if any quality problem within 3 month. Maintenance & Storage:1. Make the ball clean. ...