Pharmaceutical clean room is divided into four areas of ABCD. Particles and microorganisms are the main control objects of pharmaceutical industry clean room and clean area, and their environmental temperature and humidity pressure difference, illumination and noise should also be specified.

The clean operating room adopts a series of measures to purify the air, so that the indoor air cleanliness can meet the requirements of the operating environment, and provide appropriate temperature and humidity to create a clean and comfortable operating space environment.

The food workshop can be roughly divided into three areas: general operation area, quasi-clean area and clean operation area.

An animal laboratory is also called laboratory animal room, which refers to a building suitable for raising and breeding experimental animals. Such buildings should have specific environmental requirements and experimental methods to ensure the quality of animals and the accuracy and reliability of experimental research.

Photovoltaic silicon wafer is a kind of wafer made of silicon material, which is a necessary material for the production of photovoltaic solar energy. Most of its polysilicon and solar cells need to be manufactured in purification workshop.