It is produced by Dow Company and DuPont Company in the United States. Shortly after entering China, China's operation headquarters was in Shanghai. With the strong technical strength and brand influence of the head office, I believe it will make a difference in the China market! It is estimated that there will be no fakes on the market at present. I don't know how to position the brand. If we work hard in the high-end market like Viagra, Opus and Amber, we ordinary people may not get benefits!