NSEN e thehiloe ka 1983, e sebetsa ka thata lefapheng la li-valve tsa eccentric butterfly.Ka mor'a lilemo tsa ho hlahloba le ho itloaetsa, lihlahisoa tse teng ka tlase li thehiloe:

• Boraro eccentric serurubele valve
• Boleng bo phahameng ba serurubele
• Serurubele se nang le tšepe ho isa ho tšepe
• -196 ℃ valve ea serurubele sa Cryogenic
• Serurubele se sireletsang mocheso mochesong o phahameng
• Damper serurubele valve
• Belofo ea serurubele e hananang le metsi a leoatle

Lefapheng la litsebi, tsepamisa maikutlo holim'a li-valve tsa serurubele.NSEN e boetse e lula e ntlafatsa litšoaneleho tsa eona le ho paka matla a eona.

• Setifikeiti sa Sisteme

CE (PED)

ISO 9001

ISO 14001

ISO 45001

• Setifikeiti sa Bopaki ba Mollo

API 607

• Setifikeiti sa Phallo e tlase

API 641

ISO 15848-1

TA-LUFT

• Setifikeiti sa Russia

TR CU 010 / 032

• Setifikeiti sa tlhahlobo ea TPI

Tlaleho ea Tlhahlobo ea Cryogenic -196 Butterfly Valve

Tlaleho ea Teko ea Spray ea Letsoai e Nehareng (NSS).

Tlaleho ea Tlhahlobo ea Intergranular Corrosion (IGC).