Peb muaj cov khoom siv sim xws li Lub Tebchaws Yelemees SPECTRO spectrometer, American LECO oxygen nitrogen hydrogen gas analyzer, Lub Tebchaws Yelemees LEICA metallographic microscope, NITON portable spectrometer, high frequency infrared carbon sulfur analyzer, universal testing machine, hardness analyzer, ultrasonic flaw detector thiab lwm yam.
