With 19 years of industry heritage, Yingmi is a professional manufacturer of wireless tour guide systems and audio guide products . Our 50-acre in-house facility runs 4 fully automatic SMT production lines, backed by an experienced R&D team, standardized 5-step quality control, and full ISO9001, CE and RoHS certifications. We also provide flexible OEM & ODM one-stop solutions to meet global clients’ personalized design and manufacturing needs.