[国外标准] BS EN 12342-1998 Breathing tubes intended for use with anaesthetic apparatus and ventilators
[国外标准] JIS T7212-2005 Breathing system filters for anaesthetic and respiratory use -- Part 2：Non-filtration
[国外标准] JIS T7211-2005 Breathing system filters for anaesthetic and respiratory use -- Part 1：Salt test meth