Xiamen Zhongsheng Langjie Biotechnology Co., Ltd. is located in the beautiful biomedical industrial park of Haicang District, Xiamen city. The company was established in January 2014 with a registered capital of 10 million yuan. Mr. Chen guiyong, the founder of the company, has been awarded many honors such as “double hundred talents” of Xiamen City and “hundred talents plan” of Fujian Province, and has won many awards and subsidies. He has accumulated rich experience in technology research and development, and has applied for seven patents, such as invention patents, utility models and design. The company has obtained the medical device enterprise production license and several three class medical device registration certificates issued by Xiamen City, Fujian Province, State Drug Administration and other competent departments. The novel coronavirus and other new products and technology series include saliva drug testing, hormone detection, new coronavirus, infectious diseases detection, nutrient detection, etc,all of them were detected by colloidal gold immunochromatography (GICA) for blood and non-invasive saliva / urine. The company has mature production conditions, has a clean workshop which can control constant temperature, constant humidity and comfortable environment, ultra pure water treatment system using reverse osmosis, ion exchange and EDI systems, and a complete set of equipment and facilities, such as rotary dehumidification air conditioning system, film stripper, slitting machine, sealing machine, inkjet printer, plastic sealing machine, water making machine, high-speed low-temperature centrifuge, dehumidifier, etc Three production lines have been put into operation, with a daily capacity of 300,000 tests. If the business needs, it can be increased to 10 production lines within 30 days. The daily production capacity can reach 2,000,000 tests. Since the COVID-19 colloidal gold reagent was put into development in February 2020, the company has developed and produced many batches of products, including antibodies and antigen detection reagents that have obtained CE certification, especially the COVID-19 antigen detection reagent detected by saliva samples, which is welcomed by global customers and has entered the white list of epidemic prevention materials export of the Ministry of Commerce. In March, it began to export and sell in the form of semi-finished products and finished products, which has been widely recognized by customers.