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.

Calcium will deposit in the shower head and the automatic cleaning system, and the same happens to the faucet, where silicon will accumulate. The integrated air cleaner has an anti calcification system, which can also prevent the equipment from being calcified internally.