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As early as 2014, Shang established Hong Kong's first private mask factory in Kwun Tong to produce 100% locally made medicinal antibacterial masks. Since then, it has continuously applied for patents and has been approved by the United States, Europe, South Korea, Hong Kong, China, Macau, etc. With local registered patents, enhanced R&D technology, and passing SGS air antibacterial effect test, British CNAS and other tests, it has always been aiming to become a professional health care product manufacturer!