MRC:
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.STDC
Surface Treatment Specification:
Qq-p-416, type2, class3 federal specification 1st treatment response and qq-p-416, type2, class 3 federal specification 2nd treatment response or qq-z-325, type2, class3 federal specification 3rd treatment response and qq-z-325, type2, class3 federal specification 4th treatment response