Authentic. In 2005, the company was among the first in the industry to pass ISO9001:2000 international quality system certification and QS quality and safety certification. Five series of products have obtained national green food A-level product certification. The mustard production base in Bagua Village, Yumson Town has passed the national organic food certification. Yang Yu and Yu Yang trademarks were rated as Chongqing famous trademarks. Chongqing Fuling District Yuyang Mustard (Group) Co., Ltd. was established in January 2008. It is a leading municipal enterprise in Chongqing's agricultural industrialization specializing in the production and sales of mustard, pickles, pickles and other products.