（ 1 ）Green environmental protection during preparation and cleaning.。

（ 2 ） There is no need to treat waste liquid and waste water, which will not cause secondary pollution. During the whole cleaning process, only carbon dioxide is undergoing phase change, and there is no other matter 。

（ 3 ） Cleaning products can be widely used: electrical components, optical components, plastic products, ceramics, medical materials, national defense materials, etc. Compared with electrical components, such as washing with water will affect the electrical circuit of electrical components, However, the CO2 snow cleaning machine has no dry cleaning process, and it will not have an impact on the electrical circuit of electrical components 。

（ 4 ） The cleaning of phase-to-phase solvents will not leave detectable residues, which belongs to dry cleaning 。

（ 5 ） There is no structural damage to silicon and indium phosphide wafers, patterned cores, mixed cores, optical devices and polymers。

（ 6 ） There is no structural damage to silicon and indium phosphide wafers, patterned cores, mixed cores, optical devices and polymers。

Advantages of snowflake cleaning

DSJet technology nozzle dry ice and snow

* High-speed

impact 1um snowflake crystal and compressed air are sprayed on the surface of the workpiece, and pollutants are separated from the surface and blown out by the compressed air.

* Rapid cooling

Rapid cooling deformation of pollutants

* Micro-explosion effect

The accelerated snowflake crystal produces micro-explosion effect, and the snowflake crystal produces volume expansion of 600-800 times.

The solubility of supercritical Co2 with solvent effect is equivalent to that of cyclohexane (alias hexahydrobenzene).