Pa Meyi 28, 1983, mtsogoleri wathu wa m'badwo woyamba, a Dong, adakhazikitsa Yongjia Valve Power Plant monga woyambitsa NSEN Valve. Pambuyo pa zaka 38, kampaniyo yakula kufika pa 5500m2, ndipo antchito ambiri atsatira kuyambira pomwe NSEN idakhazikitsidwa, zomwe zatikhudza kwambiri.

Kuyambira pomwe NSEN idakhazikitsidwa, kusintha kulikonse pang'ono komanso kupita patsogolo kulikonse kwakukulu, anthu a NSEN akadali kukumbukiridwa bwino. Tikukumbukirabe chisangalalo chopeza patent ya dziko lonse ya "Bidirectional seating metal seated butterfly valve" yaku China mu 1997, yomwe inali ulemu wa zaka 14 za kafukufuku wopitilira komanso machitidwe pambuyo pa kukhazikitsidwa kwa fakitale, komanso idatsegulanso chochitika chachikulu mtsogolo. Imeneyo ndi sitepe imodzi yaying'ono ya mbiri yakale, tidzawonetsa zochitika zazikulu za kampaniyo kwa aliyense m'njira yazithunzi pansipa.

Pogwiritsa ntchito mwayi uwu, tikufuna kuyamikira makasitomala omwe akhala akutithandiza nthawi zonse, chifukwa ndi chithandizo chanu, titha kupitiliza kukula ndikupita patsogolo. Nthawi yomweyo, tipanga chithandizo chabwino kwa makasitomala ndi changu komanso mzimu wathunthu. Ndikukhulupirira kuti titha kugwirana manja ndikuwona kukula kwa wina ndi mnzake pamodzi.