Purification principle
 Airflow→Primary Air Treatment→Air Conditioning→Medium Efficiency Air Treatment→Fan Pressurized Air Supply→Purified Air Supply Pipeline→High Efficiency Air Supply Port→Clean Room→Take away Dust (Bacteria)→Return Air Channel→Fresh Air, Primary Efficiency Air Treatment .

Repeat the above process to achieve the purpose of purification.

technical parameter  
The number of air changes: 100,000 grades 10-15 times/hour;
10,000-level 15-25 times/hour;
Thousand-level 50-52 times/hour;
The wind speed of the 100-level console section is 0.25-0.35m/s;
Pressure difference: the main workshop to the adjacent clean room ≥ 5Pa; clean room to the non-clean area ≥ 10Pa;
Temperature: Winter＞16℃±2℃; Summer ＜26℃±2℃;
Relative humidity: 45-65% (RH);
Noise≤65dB(A);
Fresh air supplementary volume: 20%-30% of the total air supply volume;
Illumination: ≥300Lux.

Structural materials  
1. The clean room walls and roof materials are generally made of 50mm thick sandwich color steel plates and special alumina profiles for purification. The door adopts purification airtight door, and the window adopts aluminum alloy glass fixed window.
2. The floor adopts epoxy self-leveling or high-grade wear-resistant plastic clean floor.
3. The purification ventilation duct is made of galvanized sheet steel, and the "PEF" flame-retardant thermal insulation board is used for thermal insulation.