Air compressor a cold freezing and drying machine guaranteed usable year, and life - long maintenance.

空压机、冷干机保用一年, 并终生维护.

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It is the earliest technology enterprise to import the freezing and drying equipment.

公司是国内最早引进冻干技术设备的技术型企业.

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To preserve ( food, for example ) by rapid freezing and drying in a high vacuum.

使冷冻干燥通过在高度真空状态下迅速冷冻并干燥来保存 ( 如食物 )

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