Dashan FASTENER CO., LTD.IZY GROUPE FASTENER PRODUCTION, izay manana atrikasa famokarana maro.Ny fitaovana dia afaka mamokatra vokatra vy karbaona mahazatra na vokatra vy tsy misy dikany.Ny vokatra andiany vatofantsika dia ahitana gecko fanamboarana fiara, bolts vatofantsika simika, bolts fanitarana, bolts implosion sy ny sisa.Ny vokatry ny orinasa sy ny China Construction Group, China Railway Group, China Metallurgical Group, China Communications Group, China Coal Group dia nanao fiaraha-miasa lalina.