The registration address of the sinlong nanotechnic company ltd. In the city of sinlong nanotechnic co. Ltd. Is located in room no. 71, no. 303, located in the town of dalong southern, in the province of guangdong province. The registration authority is the market supervision authority of dong chang city, represented by a legal person, yang hao, and operates in the areas of research and development, marketing and distribution of: nanopainting materials, vacuum nanoplating, nanowaterproofing materials and equipment, nanowaterproofing materials, hardware hardware products, general mechanical equipment; technology development, technical advice, technology transfer, technical services in the field of nanotechnology; import and export of goods or technology (except for goods and technology that are prohibited by the state or involve administrative approval). (projects subject to legal approval are not allowed to operate without the approval of the relevant authorities) i'm not sure