... . It mainly produces gas cylinder valves, gas pipe valves, industrial gas decompressors, civil liquid gas boosters, brass ball valves and ... oxygen regulator in China was developed by our company.and it became popular since then.. Yuyao Jiahua Medical Appliance Co.,Ltd is a ... . Our products have exported to Taiwan, Thailand, Vietnam,Middle East,Canada,Spain,TurKey, KSA,Oman,Iran and south Asia .We ...