This specification stipulates the technical requirements for 0.5W, 1W, and 3W metal oxide film resistors for video recorders, and is used for quality certification when such resistors are used in video recorders.
SJ/Z 9177-1995 history
1995SJ/Z 9177-1995 Specifications for determination of 0.5W, 1W, 3W metal oxide film resistors used for VCR