[Abnormal Phenomena] The surface is not satisfying [Possible Reasons] 1.Blister, peeled, become yellow, wrinkle, crack, scratch hands, a lot pits,pinhole porosity, material compaction, shape distortion, hurts, scratching, paint removing, be oxidized,become black [Treatments] 
1.Do not use the cleaning agent with acidity and the abrasiveness 2.Do not use the cleaning ball to clean the faucet surface