The first layer of the WYC-12A biosafety transfer box is designed to accommodate microbial cultures; it must be waterproof and leak-proof, with ample absorbent material wrapped around the outside to quickly absorb and neutralize any leakage in the event of a safety production accident.

The second-layer 95KPA storage tank: It must be sturdy, waterproof, and leak-proof, and used for maintaining and preserving the first layer. The container of this layer is a sealed container made of polyester raw materials to prevent leakage caused by vibration, temperature, relative humidity, and pressure changes during transportation. Based on strict sealing performance testing, it can withstand an internal structural pressure of 95kPa without water leakage within a temperature range of -40℃ to +55℃.
The specific requirements for the outer packaging of this layer are based on the GB/T15170 standard. This layer can accommodate several primary containers holding microbial cultures, with a substantial amount of water-absorbing material filled between them. Such materials can include synthetic fiber fillers, cotton, paper towels, or commercially available moisture-absorbing wrappers.
Third-layer packaging box: used for maintaining and preserving the outer packaging, the packaging box can be made of cardboard, wooden packaging, sturdy plastic boxes, etc., and should bear marks and descriptions indicating the sender, receiver, and contents. Depending on the type and requirements of the bacteria (virus), to reduce the temperature inside the outer packaging, cold storage and heat storage components should be placed between the second and third layers.