Regulation of classification of blue black quality

Classify of quality of 1 blue black
1.1 blue black are A, B, C3 by quality circumstance cent grade, among them class A product is classy article, b form product is first-rate product, c form product is tasted for qualification.
1.2Index of function of grade of A, B
The blue black of grade of A, B divides each function index to should accord with QB551-84 outside the regulation, fastness of deepness of colour and lustre, leach, insolation fastness, diffuse degree, intermittence is written, exterior of PH value, ink and the technology of the exterior that pack ask to should accord with a watch 1 regulation.

Express 1

Project	Grade	Category
		Advanced article	General class is tasted
Deepness of colour and lustre	A	Excel is advanced and comparative ink	Ink of contrast of excel general class
	B
Leach fastness	A	Excel is advanced and comparative ink	Ink of contrast of excel general class
	B
Insolation fastness	A	Excel is advanced and comparative ink	Ink of contrast of excel general class
	B
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