The anti backflow system prevents dirty water from being pumped into the clean water pipe, which is composed of layers of materials. Equipment with anti backflow system will be marked with DVGM passing mark on the package surface. Experience shows that 50 cm long pipes are enough, and 70 cm or more pipes can also be bought on the market.

Copper body: As far as the dragon head is concerned, copper has already become the preferred material, mainly because the antibacterial effect of copper medium has already been recognized by authoritative laboratories. Most high-end bathroom brands choose copper as the main body of the faucet, and it has become an inevitable trend that other materials are eliminated.