... Jinqiao Welding Material Co., Ltd, Chaohu Daqiao Nails Co., Ltd, Chaohu Yinqiao Welding Material Factory, Chaohu Jinlong metal manufacturing Co., Ltd, Hefei Yinqiao Welding Material Co., Ltd and etc ... sizes.With 13 years' experience of production, advance technology and equipment, systematic management and insisting consideration on quality, innovation and sincerity ...