R&D、 Production、 Sale、 Online sales: medical devices, medical masks, Daily protective masks, Packaging materials, Hygiene materials, Hygiene products, protective equipment, Non-woven fabrics and their products, textile, Daily necessities, Labor protection supplies, Environmentally friendly products, Disinfection supplies, thermometer, Disposable protective clothing; domestic trade( The above items do not include pre-approval matters for commercial registration); Import and export of goods or technology( Except for the import and export of goods and technologies that are prohibited by the state or involve administrative approval)。( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments)