Facai sheep is a product launched by Hengyuanxiang Group Co., Ltd. in early 2003. Due to intellectual property issues, the brand was officially renamed as "Caiyang" in 2007. At present, except for a few stock products with the words Hengyuanxiang on the market, all other products are produced and sold by Hengyuanxiang Group in conjunction with other enterprises.
Hengyuanxiang is a time-honored brand in China, which was founded in 1927 and is famous for producing sweaters and various woolen goods. Hengyuanxiang Group, as one of the leading enterprises in China wool spinning industry, has a high reputation and influence in domestic and foreign markets.
Therefore, although Nostoc flagelliforme was once one of the brands of Hengyuanxiang Group, now they are two independent brands with different brand connotations and market positioning.