Yingmi operates a 50-acre facility in Hefei High-Tech Zone equipped with 4 full-automatic SMT production lines. Backed by a high-level R&D team, we implement full in-house production and standardized 5-step quality control. Holding ISO9001, CE and RoHS certifications, we provide professional wireless tour guide system and audio guide products, meanwhile offering flexible OEM & ODM one-stop services to satisfy personalized design, development and manufacturing demands worldwide.