1：Size: The size of the double-layer biological specimen bag can be customized according to actual needs. Common sizes include 5cm x 5cm, 10cm x 10cm, 15cm x 15cm, etc.
2：Material: Double-layer biological specimen bags are usually composed of inner and outer layers of materials. The outer layer material is generally made of tough, wear-resistant, non-slip polyvinyl chloride (PVC) or polypropylene (PP) material, and the inner layer material is generally made of more water-absorbent material. Poor polyethylene (PE) or polypropylene (PP) materials.
3：Thickness: The thickness of the double-layer biological specimen bag is also one of its specifications. The common thickness range is between 0.1mm and 0.3mm.
4：Transparency: In order to facilitate observation of specimen preservation, the outer material of the double-layer biological specimen bag is usually designed to be transparent or translucent.
5：Sealing: The double-layer biological specimen bag is sealed by heat sealing or adhesive to ensure the safe preservation of specimens.
Freeze resistance: Double-layer biological specimen bags should have a certain degree of freeze resistance to meet the needs of low-temperature preservation of specimens.
6：High temperature resistance: For biological specimens that require heating or microwave heating, the double-layer biological specimen bag should have high temperature resistance to prevent rupture or deformation during the heating process.
7：Labeling: Double-layer biological specimen bags are usually labeled with labels to facilitate identification and classification of specimens.
| Company Name | Dongguan Chenghua Industrial Co.,Ltd |
| Address | located in Building 49, No. 32, Yucai Road, Hengli Town, Dongguan City, Guangdong Province, China. |
| Functions | Biodegradable/Compostable/Recyclable/Ecofriendly |
| Material | PE/PO/PP/OPP/PPE/EVA/PVC, Etc, Accept Custom |
| Main Products | Zipper Bag/Ziplock Bag/Food Bag/Garbage Bag/Shopping Bag |
| Logo Print Ability | offset printing/gravure printing/support 10 colors more... |
| Size | Accept custom for customer needs |
| Advantage | Source Factory/ ISO9001,ISO14001,SGS,FDA,ROHS,GRS/10 Years Experience |
1：Protect biological specimens: Double-layer biological specimen bags can effectively protect biological specimens from the impact of the external environment and prevent problems such as contamination, oxidation, and deterioration.
2：Maintain specimen freshness: Double-layer biological specimen bags are made of materials with good sealing properties, which can effectively prevent the entry of oxygen and moisture, thereby maintaining the freshness of biological specimens.
3：Convenient transportation and storage: The double-layer biological specimen bag adopts a lightweight and easy-to-carry design for convenient transportation and storage.
4：Improve safety: Double-layer biological specimen bags can effectively prevent specimens from being damaged or contaminated during transportation and storage, improving safety.
