I-Hebei dashan fasteners co., ltd liqela elikhulu lemveliso ye-fasteners, elineendibano zocweyo ezininzi zemveliso.Iimveliso zenkampani kunye neQela loKwakha iChina, iChina Railway Group, iChina Metallurgical Group, iChina Communications Group, iChina Coal Group iqhube intsebenziswano enzulu.
Amazwe amaninzi akhuphe imigaqo-nkqubo engavumeli ukusetyenziswa kweteknoloji ye-welding ukudibanisa imicu njengenkxaso yesakhiwo kwizakhiwo, ngoko ke ukuvela kwe-sleeve yensimbi kusombulula le ngxaki, usebenzisa i-sleeve ukudibanisa imicu emibini kunye, izinzile kwaye zihlala zihlala njalo.