Classification for Clearroom

Cleanroom is a controlled enviroment for manufacturing or sceintific research which need lower pollutant area. According to ISO 14644-1, each level for particle quantity as below matrix. Classification for ISO …

Convert Square Foot to Pyeong

A pyeong is a unit of the size of rooms or buildings in Korea, Japan, and Taiwan equal to 400/121 square metres. We provide est. matrix convert square metre to …