Accord with the ISO32 standard for gas identification; Have passed over 10000 times detection, according with BS EN 737-1 1998 standard; Each outlet must be detected before leaving factory; Made up of copper and some high-strength and fireproofing polymers; Aluminium has been processed for improving the rigidity; Fixing bracket made of anticorrosive iron; Have functions of avoiding misplug; Easy installation; With high credibility and everlastingness; Beautiful appearance; Different outlets can be used with different medical gases; Have Self-closed equipments, allowed to repaire while the gas havn't been switched off.