Washing method according to the surface state:
General notice when washing, please pay attention not to scratch the surface to avoid the use of bleaching ingredients and abrasive solution, steel wire ball (brush roller ball), grinding tools, etc. In order to remove the washing liquid, wash the surface with clean water at the end of washing.
Surface condition and washing method
Dirt and scale removal - wash with soap, mild detergent or warm water.
Label and film -- scrubbing with warm water and weak detergent;
Binder ingredients - use alcohol or organic solutions;
Contamination of fats, oils, lubricants - after being dried with a soft cloth or paper, wash with a neutral detergent or an ammonia solution or a special detergent;
Rinse immediately with water, soak in an aqueous solution of ammonia or neutral carbonated soda, and rinse with a neutral detergent or warm water.
Organic carbides adhere - soak in a hot neutral detergent or ammonia solution and wash with a lightly ground detergent.
Fingerprints - use alcohol or organic solvents (ether, benzene), and dry with a soft cloth before washing with water;
Excessive rainbow pattern -- caused by detergent or oil, and neutral detergent with warm water when washing;
Welding with thermal discoloration -- wash with 10% nitric acid or hydrofluoric acid solution, then neutralize with ammonia carbonated soda light solution, and then wash with water -- specially wash drugs;
Rust caused by surface contaminants - washed with nitric acid (10%) or abrasive detergents - is washed with a special detergent.
