0-7567-3248-51 cse@mail.wu.ac.th The Center for Scientific and Technological Equipment, Walailak University 222 Thai Buri , Tha Sala District , Nakhon Si Thammarat Province 80160 Thailand. 5S Green Area Standard For Development And Maintenance The Center for Scientific and Technological Equipment Walailak University 222 Thai Buri , Tha Sala District , Nakhon Si Thammarat Province 80160 … Continue reading 5S Green area standard for development and maintenance