Hebei dashan fasteners co.,ltd ke sehlopha se seholo sa tlhahiso ea li-fasteners, se nang le lithupelo tse ngata tsa tlhahiso.Lihlahisoa tsa k'hamphani le China Construction Group, China Railway Group, China Metallurgical Group, China Communications Group, China Coal Group li entse tšebelisano-'moho e tebileng.
Linaha tse ngata li ntšitse maano a sa lumelleng tšebeliso ea theknoloji ea welding ho hokahanya likhoele e le tšehetso ea meralo mehahong, kahoo ho hlaha ha sleeve ea tšepe ho rarolla bothata bona, ho sebelisa sleeve ho kopanya likhoele tse peli hammoho, tse tsitsitseng le tse tšoarellang.