Laizhou Dongsheng Valve Co., Ltd. ni uruganda rukora umwuga wa valve, ni icyegeranyo cyubushakashatsi niterambere, igishushanyo mbonera, gukora, kugurisha isosiyete yihariye ihuriweho kuva 2002. Dufite urwego rwimikorere yubuhanga kandi bukomeye, imbaraga za tekinike zikomeye , ibikoresho bigezweho byo gutunganya hamwe niterambere rya tekiniki ryumvikana, tekinoroji yo hejuru hamwe nabatekinisiye beza nabakozi.Uruganda rwacu rufite metero kare 30.000 kandi rufite abakozi 148.Nyuma yimyaka 20 yibanze, twateye imbere mubucuruzi buzwi cyane bwa cheque valve, kandi ibicuruzwa byacu byoherezwa muburayi, Amerika, Afrika, Aziya yepfo yepfo yepfo, Ositaraliya nibindi bihugu birenga 70.