The JY dry block is a product that adopts advanced microcomputer control and thermoelectric technology. It adopts unique temperature control technology and pure aluminum alloy is a standard module, which makes the temperature control more accurate and stable. The use of thermoelectric technology makes the temperature control range wider, and can be widely used in biological verification such as sample storage, storage and reaction of various enzymes, pre-denaturation of DNA amplification and electrophoresis, and serum coagulation.