Clean engineering refers to the process of removing pollutants such as micro-particles, harmful gases, and bacteria from the air within a specific space, and precisely controlling factors such as indoor temperature, cleanliness, indoor pressure, air flow speed and distribution, noise and vibration, as well as lighting and static electricity within the required range. This results in a specially designed space. That is to say, regardless of how the external air conditions change, the indoor environment can maintain the predetermined performance characteristics such as cleanliness, temperature and humidity, and pressure. 

The air is generally filtered through high-efficiency air filters (HEPA) or ultra-high-efficiency air filters (ULPA) before entering the room, thereby removing particles from the air. In addition, cleanrooms are usually equipped with a series of devices, such as air shower units, clean workstations, air showers, transfer boxes, etc., aiming to create a highly controlled environment. Cleanrooms are widely used in many industries, including electronics, pharmaceuticals, biotechnology, food, and medical equipment manufacturing. 

At present, our company's clean engineering mainly includes microbiological testing rooms (P2, P3, GMP levels), biosafety laboratories, constant temperature and humidity rooms, and PCR laboratories.