NSEN idakhazikitsidwa mu 1983, ikugwira ntchito yopangira ma eccentric butterfly valves.Pambuyo pazaka zambiri zofufuza ndikuchita, mndandanda wazinthu zomwe zilipo pansipa zapangidwa:

• Vavu yagulugufe wamtundu wa katatu
• Valve yagulugufe yogwira ntchito kwambiri
• Vavu yagulugufe yachitsulo mpaka chitsulo
• -196 ℃ Cryogenic butterfly valve
• Kutentha kwakukulu kwachitetezo chamoto choteteza agulugufe
• Damper butterfly valve
• Vavu yagulugufe wosamva madzi a m'nyanja

M'munda wa akatswiri, yang'anani kwambiri mavavu agulugufe.NSEN ikuwongoleranso ziyeneretso zake ndikutsimikizira mphamvu zake.

• Chitsimikizo cha System

CE (PED)

ISO 9001

ISO 14001

ISO 45001

• Chitsimikizo cha Moto

API 607

• Low Emission Certification

API 641

ISO 15848-1

TA-LUFT

• Chitsimikizo cha Russia

TR CU 010 / 032

• TPI Test certification

Cryogenic -196 Lipoti la Mayeso a Butterfly Valve

Neutral Salt Spray (NSS) Test Report

Intergranular Corrosion (IGC) Test Report