Parts for power semiconductor devices, passed ISO 9001 and ISO 14001.OEM service.Export to USA,Germany,Russia,India,and so on. ... development of the most sophisticated ones in the world, and the principal technical specifications have achieved the advanced world ... ,≤0.005mmParallelism between copper surfaces,≤0.03mmConcentricity between flange and copper,≤0.5mmPull test,≥5KN/cm2Temperature cycling,-65°C ...