Food grade PE plastic material, safe and environmentally friendly, no odor. Thickened plastic bags are not easy to leak, have good sealing, isolate pollution, and maintain long-lasting freshness. Multiple specifications can meet different needs, easy classification, convenient and fast. Point and break design, convenient and fast to use, constant temperature sealing process, uniform stress, and not easy to break. Flat bottom sealing for larger capacity. Suitable for both hot and cold, can be placed in the refrigerator for freezing, and can be used for microwave heating.