About Us

Since 2003, it has been a professional manufacturer of health-care products.

Our Advantages


Independent simulation

Production Center


With 20 years of experience in TENS/EMS manufacturing, we ensure product quality and stability. Our factory is equipped with 50 smart machines, guaranteeing the most efficient production possible. Our factory is equipped with 50 smart machines, ensuring the most efficient production possible.

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R&D Design Center


We boast a team of seasoned designers with extensive expertise in product appearance design, coupled with a distinctive spirit of innovation that keeps us at the cutting edge of fashion. Our R&D team comprises approximately 40 members, including engineers specializing in electronics, mechanical engineering, hardware, software, and testing—key pillars of our competitive edge.

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Qualification Certification


Specializing in health care products, the company obtained certifications including MDSAP, ISO 13485, FDA 510(k), FCC, and Medical CE in 2003. With 20 years of OEM/ODM experience, it is a Gold Supplier among Amazon’s top ten sellers.

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Quality Control


Sunmas’ QC team has been working tirelessly to ensure that every device achieves 100% performance, guaranteeing safe and reliable use for our customers—this is one of the reasons we are trusted.