BAOERFU POWERED AIR PURIFYING RESPIRATOR TYPE：PRF-101(2005-3-30 10:32:31)

BAOERFU POWERED AIR PURIFYING RESPIRATOR TYPE：PRF-102(2005-3-30 10:30:56)

BAOERFU POWERED AIR PURIFYING SOLAR AUTO-DARKENING WELDING HELMET TYPE：PRF-101AD PRF-102AD(2005-3-30 10:28:08)

General knowledge of air filtering(2004-8-31 9:55:03)

Baoerfu Respirators and the Prevention and Cure of Occupational Diseasesin China(2004-8-30 14:39:06)