... HRC65-72,the working face precision within 0.015um, flatness up to 0.1um-0.2 um5SpecificationsPressure: 1.0-1.7bar/cm2 (max.)Temperature range ... Industrial Estate, Xiong County, Baoding City, Hebei Province, China.near to beijing and tianjinEstablished :the year of 1986Customers:(1china:SHANTUI CONSTRUCTION ...