The COVID-19 Antigen Rapid Testing Kit (Colloidal Gold) self-developed by Zhongshan Bio-tech Co Ltd made the List of Medical Devices and Supplies with Export Certification/Authorization from other Countries (commonly known as the national "export white list"). At present, Zhongshan Bio-tech's COVID-19 series products - antibody and antigen test kits - have been approved for export.

A spokesperson for Zhongshan Bio-tech said that the colloid gold antigen test kits can be used to detect any traces of coronavirus with a respiratory tract sample in a fast, accurate, easy way. Results can be obtained within 15 minutes at the soonest so they are suitable for mass screening at the grass-roots level.

The spokesperson also said that this antigen test kit, with its availability and efficiency, can be used for wide-range daily detection, and as a supplement to other test methods. The demand for this product has increased greatly all over the world.