Ultra-low-temperature water vapor cryopumps rely on specialized mixed refrigerants. While domestic use is straightforward, refrigerant handling is a common pitfall in export operations. Many export projects stall at the logistics stage after equipment production is complete. Refrigerants filled in standard steel cylinders are classified as Class 2.2 dangerous goods; air transport requires an "Air Transport Condition Appraisal Report" issued by an authorized civil aviation agency. Additionally, the cylinders must have both a "Performance Certificate for Dangerous Goods Packaging" and a "Certificate of Use for Dangerous Goods Packaging"—both are mandatory, and the goods cannot be shipped as general cargo. MSDS documents downloaded online often contain incorrect CAS numbers, leading to the rejection of air transport appraisal reports; verifying the CAS number for every component is essential. A different scenario arises when the refrigerant is already sealed inside the equipment unit rather than in a separate cylinder. In this case, complete SDS/MSDS documentation is still required to submit the entire unit for an air transport condition assessment; air freight booking is only possible if the unit complies with relevant IATA special provisions. Furthermore, if the refrigerant charge specifications change, a new appraisal report must be issued. For equipment export projects, Guangzhou Xieyi Automation provides clients with fully compliant documentation—including refrigerant component lists, accurate CAS numbers, and bilingual (Chinese/English) SDS files—and coordinates with freight forwarders to submit air transport appraisal data, thereby avoiding the risk of cargo detention. A reminder to industry peers: do not pack equipment and refrigerant cylinders together in the same air freight shipment; distinguish between the specific appraisal requirements for sea and air transport, and allow sufficient lead time for processing appraisal documents—do not wait until the last minute before shipment, as this can cause delivery delays.
Post time: 2026-10-31 15:01:24