FAQ
- 1.What is anti-fire safe design ?[2012-08-20]
- 2.What is anti-static device ?[2012-08-20]
- 3.What is automatic body cavity relief ?[2012-08-20]
- 4.What is Emergency sealing ?[2012-08-20]
- 5.What is double block&bleed(DBB) design ?[2012-08-20]
- 6. How about the underground ball valve feature ?[2012-08-20]
- 7. What is your blow-out proof stem design?[2012-08-20]
- 8.What is oviko top entry ball valve feature ?[2012-08-20]
- 9. What is Oviko V type ball valve feature ?[2012-08-20]