1.Using nation standard 59 copper,structure closely without stomatal,excluding impurities 2.The copper content close to 60%,ensuring the weight and touch feeling. 3.The Lead content is about 0.15% ,below the security level,absolutely guarantee the safe of the human body 4.Pure skill manual polishing and dozens polishing process make the surface of each part extremely smoothness,attention to detail, in order to make the product perfectly 5.The manual meticulous precision grinding and the fine welding make the connecter of each part extremely smoothness and tightness,absolutely no leakage phenomenon 6.After the plating acid copper,manual polish,chromeplate,it enhance the products corrosion resistance and abrasion resistance ,absolutely no rusty and flaking off phenomenon 7.Using high-quality valve of TaiWan and spain,no leakage within 500000 times using,and provide five years guarantee for natural using 8.Using high-quality Hose,provide three years guarantee for natural using