China Carbon black—Determi GB Standards Search Result

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	GB/T 34323-2017 Carbon black—Determination of light transmittance of water dispersion—Spectrophotometer method 炭黑水分散体透光率的测定分光光度计法 - 英文版
	GB/T 10722-2014 Carbon black—Determination of total and external surface area―Nitrogen adsorption test method 炭黑总表面积和外表面积的测定氮吸附法 - 英文版

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