Feature:
 　1,Adopt imported 3-layer filtering medium with high efficiency performance. 
　2,Applying high-efficiency ultrasonic sealing process. The filters have compact appearance and reach the international quality standard.
　3,With advantages of good sealing, low breathing flow resistance and small dead space.
　4,Providing enough humidity for physiological need, filtering bacteria and other particles larger than 0.3um in anesthetic gas and the filter precision achieves 99.9999%.