Why can't I buy Riyuexing protein powder in the supermarket?

Tian Huan Nutrition Group mainly holds three subsidiaries: Tian Huan Nutrition Group, Daqing Tian Huan Riyuexing Protein Co., Ltd. and Daqing Riyuexing Co., Ltd. Daqing Tian Huan Riyuexing Protein Co., Ltd. is a wholly foreign-owned enterprise and a listed company in Singapore. It is a large-scale comprehensive enterprise integrating R&D, production and sales of soybean protein products. The company is headquartered in Beijing, and its business scope covers many fields such as deep processing of agricultural and sideline products, finance and foreign trade. The company's R&D and production bases are located in Lin Dian Eco-industrial Park in Daqing City and Riyuexing Soybean High-tech Industrial Park in Daqing High-tech Industrial Development Zone. The company has excellent equipment, advanced production technology, perfect detection means, fine control, reliable product quality and perfect after-sales service. The protein powder series products produced by the company sell well in 29 provinces (autonomous regions and municipalities directly under the central government), more than 200 cities and 10000 supermarkets, and are exported to Russia, Turkey and other countries.