Pro-Tech (Hong Kong) Ltd. is manufacture of labor protective respirators. We have almost 20 years of experience in the production of labor protective products. Our purpose is quality first, customer first, emphasis on credibility, to be creative and pioneering courage, valuable. We successfully develop new products single-tank anti-virus filtering respirator.This year we has successfully launched the Fifth generation anti-virus masks, and the sixth generation full face respirator in both cassette style and pipe style. In August 2008 we have successfully passes the CE testing in this respirators, and we the first one whom can pass the CE testing in the industry.