Copper has been approved as the material which microbial "doesn't" want to stay for more than 4 hours, and that also means copper is the suitable material for public spaces and hospitals to prevent cross infection by the copper ions. JUSTIME use the copper which includes 90% pure copper and 10% nickel as the main material to design drinking taps, faucet handle, grab bars, and door handles for special requirements, and copper ions could continuously release from the material and keep stopping bacterial growth.