... with your demand(drawing). We are involved in medical industrial equipment since 1992 .The first piston type oxygen regulator in China ... .and it became popular since then.. Yuyao Jiahua Medical Appliance Co.,Ltd is a Chinese company of having real strength. We specialized ... we could offer OEM service. Our products have exported to Taiwan, Thailand, Vietnam,Middle East,Canada,Spain,TurKey, KSA,Oman, ...