Clean room where the air suspended particle concentration is controlled. Its construction and use should reduce indoor entrapment and produce stranded particles. Other relevant parameters of indoor installation requirements such as temperature, humidity and pressure shall be controlled. How the dust is produced in a clean room. ●Personnel factors ●Production process production ●Equipment operation generated

In order to make sure that the clean room was well meet the design requirements, before deliver the clean room project to user, construction unit should be arrange test the whole system, including below: ●Detection of the cleanliness for a clean room facility. The biological clean room shall be tested for floating bacteria and settlement

From a manufacturer who build up the clean room facility, who will use the clean room facility and who will take charge the maintenance of the clean room facility. The purification system of the clean room shall have at least the initial, medium and HEPA system at the end section. Air supply of the clean

ISO 3/CLASS 1 Microelectronics industry, mainly used for manufacturing integrated circuits, whose precision of submicron. ISO 4/CLASS 10 Mainly used in the semiconductor industry with a bandwidth of less than 2 microns. ISO 5/CLASS 100 Sterile manufacturing process mainly used in the pharmaceutical industry; Surgery, including the implantation procedure; Integrated circuit manufacturing; Isolation and treatment