Cartridge is the heart of the faucet, cartridge's quality directly determines the use feeling of the faucet. So how to choose a good cartridge?

1. Before you buy, you can open and close the faucet handle repeatedly, and feel whether there is resistance or not when switching up and down with your hand. Usually, a cartrudge that doesn't feel stuck is good.

2. Open the faucet handle and gently move back and forth to feel whether it is smooth or not. A good cartridge will be feels light and no resistance feeling. 

3. Choose famous brand to buy. Do not underestimate the cartridge, it directly determines whether the faucet temperature could adjust sensitive or not, and also determines the service life of the faucets.