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 had successfully developed "single-tank anti-toxin filtering respirator." Till 2008 we have successfully launched the Fifth generation anti-toxin masks, and the sixth generation full face respirator in both cartridge style and pipe style. In August 2008 we have successfully passes the CE testing in both single Half Face Respirator and Full Face Respirator. We are the first one whom can pass the CE testing in the industry.