Southwestern Guangxi Zhuang Autonomous Region. Strain refers to the propagation material composed of edible fungi, industrial fungi, agricultural fungi mycelium and its growth matrix. Chongzuo Pleurotus ostreatus strains are sold in the southwest of Guangxi Zhuang Autonomous Region. The company name is Ziping Edible Fungi, Longzhou County, Chongzuo City. A professional planting cooperative that mainly sells edible fungi strains, other edible fungi, and planting and breeding strains.