供en549认证，en682认证，dvgw vp 406认证，en877认证。材料测试din en 682, type g or h 材料测试din en 682, type g category l 材料测试din en 549, seals excl. ozone resistancetests of material and of seals are incl.add. ozone test on seals and test sheetsannex b-tests/identification references 材料测试din en 682 and en 549 incl. ozone testannex b-tests/identification references
EN549认证，EN682认证，EN681认证 橡胶圈认证