Deposit metal alloy onto the special treated ceramic in ultrahigh vacuum, it gives ultra-low noise figure with low temperature coefficient (T. C.) In four classes: ±150ppM, ±100ppM, ±50ppM, ±25ppM/°C. Popular requirements of tolerance is 2%, 1% and special needs for ±0.5%, ±0.25%, ±0.1% are classified. Since it is of high precision, temperature stable, low noise, highest reliability and approved MILR-10509E specification it is suitable for following applications: HI-Fi stereo, audio & video appliances, electronic calculators, digital and analog computerized system, precision instrument bridge circuits, auto controlled equipment, military devices and space program applications.