Sea salt bags can be checked in. According to the relevant information, the packaging is complete and will not leak, and salt is allowed to be checked in the suitcase. Items that cannot be checked at this time are as follows: Fragile or easily damaged items. Perishable items. Cash, negotiable instruments. jewelry. Precious metals and their (gold and silver) products. Antique calligraphy and painting. Computers, personal electronic devices. Samples and other valuable items. Equipped with lithium battery. Important documents and information. Travel documents, medical certificates, X-rays. Prescription medicines that individuals need to take regularly.