Hebei dashan fasteners co., Ltd ndi gulu lalikulu lopanga ma fastener, lomwe lili ndi zokambirana zingapo zopanga.Zogulitsa za kampaniyo ndi China Construction Group, China Railway Group, China Metallurgical Group, China Communications Group, China Coal Group yachita mgwirizano wozama.
Mayiko ambiri apereka ndondomeko zomwe sizilola kugwiritsa ntchito teknoloji yowotcherera kuti igwirizane ndi ulusi monga chithandizo cha zomangamanga m'nyumba, kotero kuti kutuluka kwa manja achitsulo kumathetsa vutoli, pogwiritsa ntchito manja kuti agwirizane ndi ulusi umodzi, wokhazikika komanso wokhazikika.