The main causes of the infection of Pleurotus eryngii are: 1. Raw materials are mixed with raw materials infected with bacteria. 2. Insufficient sterilization time, cease-fire during the sterilization process. 3. The sterilized stove has too many tightly placed bacteria bags. 4. When raw materials are selected from hard materials such as sawdust and corn cobs, the material does not absorb water, and the raw material is full of heart, which may result in incomplete sterilization. 5. When sterilizing with a pressure cooker, no cold air is exhausted, resulting in incomplete sterilization. Control methods: 1. Raw materials should be fresh, mildew-free raw materials, and must not be filled with any moldy raw materials. 2. After the water is opened, keep the fire sterilized for 10 to 12 hours. 3. A space of about 1 cm is left between the rows and rows of the bacteria rods in the sterilizing stove and between the row and the wall. 4. Use corncobs, sawdust and other hard materials as raw materials to mix in water before soaking. 5. When the pressure cooker is sterilized, the exhaust valve must be opened when the pressure reaches 0.05 MPa. After the cold air is fully exhausted, the exhaust valve is sterilized. Led Facial Mask,Led Light Facial Mask,Led Therapy Facial Mask,Led Facial Skin Care Mask Shenzhen Jie Zhong Lian Investment Co., Ltd. , https://www.szmeizons.com