Efficient derergency biological cleaning for printer, Non-irritation , anti-static, alcohol-free, ammonia-free. Efficient derergency biological cleaning for printer :1.Non-irritation , anti-static, alcohol-free, ammonia-free 2.EU standards, through the RoHS, REACH testing. 3.Unique protein activity factor can fully penetrate into the ink stains, the physical adsorption without residue, while ...