Ningbo HAGA Industries Co.,Ltd is a professional manufacture specialized in pipe line industry.Our products are widely used in the connecting of industrial hose and pipe for both low and high pressure area.We also supply metal parts which are made by investment casting,gravity casting, die casting,sand casting,forging,stamping and machining. There are profestional test centers and advanced production lines for products which are made from stainless steel,aluminum,brass and steel in different ...