zhejiang shuanglong pump co.ltd is collecting designing,manufacturing,sales and serives the specialty mould enterprise for organic whole,and the specifications completely being designed excellently various kinds of water pump and electical machinery,the technology is advanced and the capability is stablized relIable,broad trades deeply favorate our products. Our company is a professional enterprise that produces kinds of professional pumps,which consist of 20 series and more than 3000 ...