タイトルまたは説明

shijiazhuang helv co.,ltd, specialized company for valves include gate valve, ball valve, globe valve, butterfly valve, check valve , pressure release valve, hydraulic control valve, etc. 
main materials include cast iron , cast steel , stainless  steel , bronze ,etc.
products are exported America, Brazil, Peru, australis, qatar, romania, UAE, New Zealand, Saudi Arabia, Guatemala, Pakistan, and so on .