The Leica EM VCT500 Leica Vacuum Freeze Transfer System is a pollution-free frozen sample transfer transfer system designed to protect samples from contamination and the formation of ice crystals during intact transfer and transfer between different preparation and analysis instruments. The sample can be moved and transported under freezing or room temperature, vacuum or protective gas conditions, and the transfer to sample addition is completed under vacuum. Three sample racks can be connected simultaneously, with three transfer schemes, and the temperature and vacuum degree of the sample can be monitored at any time throughout the entire workflow. It can flexibly connect to the analysis system, and each instrument is specially customized according to user requirements.