Nyob ntawm Ningbo, lub nroog seaport nto moo nrog nws txoj kev lag luam muaj zog, Yehui yog tsim thiab xa tawm ntau yam khoom thiab cov kev pabcuam ntawm cov kav dej, cov khoom siv tu cev, cua sov, cov kab dej lim dej. Peb cov khoom muaj xws li txhua yam li qub, fittings, mixers, da dej, chav dej accessories, HAVC thiab lwm yam. Peb kuj muab qee cov tuam txhab tsim khoom txawv teb chaws txhim khu kev qha rau kev sib dhos. Cov khoom tiav ntau yam yog ua los ntawm tooj dag, bronze, zinc, aluminium alloy, yas, roj hmab, hlau thiab stainless hlau, thiab lwm yam. Muaj ntau yam muaj rau koj xaiv.