Hong Qiangxing (Shenzhen) Electronics Limited518102About Us4F, Yongchang Building, Xicheng Industrial Zone, Xixiang Street, Shenzhen, Guangdong, ChinaSUNMAS is a professional manufacturer specialized in TENS Units for pain relief, EMS stimulators for muscle training and other healthcare products, including Facial Beauty Massagers, Foot massager, Massage Hammer, Infrared Heating Vest etc,. Our products got the international certificates of FDA 510(K) in US,Medical CE In Europe, FCC,etc., We have 15+ years' experience in manufacturing and exporting. Owning an excellent R&D team, conforming to ISO 13485 Quality Management System, providing excellent and comprehensive services, we won all our customers' trust with New and Innovative, High Q