Dashan FASTENER CO., LTD.KE SEHLOPHA SA TLHOKOMELISO SE KHOLO, se nang le lithupelo tse ngata tsa tlhahiso.Thepa e ka hlahisa lihlahisoa tse tloaelehileng tsa tšepe ea carbon kapa lihlahisoa tsa tšepe tse sa hloekang.Lihlahisoa tsa letoto la anchor li kenyelletsa gecko ea ho lokisa koloi, liboutu tsa ankora tsa lik'hemik'hale, liboutu tsa katoloso, liboutu tsa implosion joalo-joalo.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.