4140: 产品细节图：[展示塑料自封袋1#的图片] 产品性能：双面12丝，密封性能好，可有效防潮、防尘。 用材：高质量塑料，坚韧耐用。 参数表： 型号：ASL-12-1 尺寸：50*70mm 丝数：双面12丝 包装：100/包 型号：ASL-12-1 用途：用于存放小物件、样品等，方便分类和整理。 包装：每包100个，便于批量使用。 使用说明：将物品放入袋中，按压封口即可。 售后服务：如发现质量问题，可及时更换。 Product Details Image: [Show the picture of Plastic Self-Sealing Bag 1#] Product Performance: With 12 threads on both sides, it has good sealing performance and can effectively prevent moisture and dust. Materials Used: High-quality plastic, tough and durable. Parameter Table: Model: ASL-12-1 Size: 50*70mm Thread Count: 12 threads on both sides Packaging: 100/pack Model: ASL-12-1 Usage: Used to store small items, samples, etc., convenient for classification and organization. Packaging: 100 pieces per pack, convenient for batch use. Instructions for Use: Put the items into the bag and press the seal. After-sales Service: If any quality problem is found, it can be replaced in time. 4141 - 4143: 与4140类似，不同之处在于尺寸和型号。 Similar to 4141, the difference is the size and model.