ALD Thermal Treatment, Inc. is the premier source for vacuum heat treatment services to the precision manufactured component segment. Our success in providing precision components with minimal geometric changes and superior quality, drives our desire to bring vacuum processing (LPC) with high pressure gas quench (HPGQ) to the manufacturing community. mal Treatment, Inc. is the premier source for vacuum heat treatment services to the precision manufactured component segment. Our success in providing precision components with minimal geometric changes and superior quality, drives our desire to bring vacuum processing (LPC) with high pressure gas quench (HPGQ) to the manufacturing community.