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NG28 provides chemical analysis services for illegal leather additives related to measurement audits. Measurement audit: An activity where a participant performs actual tests on the tested items and compares the test results with reference values. Note: Measurement audit is a proficiency testing plan that conducts a "one-to-one" ability evaluation of a participant

NG28 provides leather organic chemical analysis services related to measurement audit. Measurement audit: an activity in which a participant conducts an actual test on the tested item and compares the test result with a reference value. Note: Measurement audit is a proficiency testing plan that conducts a "one-to-one" ability evaluation of a participant

NG28 provides leather heavy metal chemical analysis services related to measurement audit. Measurement audit: An activity in which a participant performs an actual test on the tested item and compares the test result with a reference value. Note: Measurement audit is a proficiency testing plan that conducts a "one-to-one" ability evaluation of a participant.

NG28 provides leather physical characteristics testing services related to measurement audits. Measurement audit: an activity in which a participant performs actual tests on the tested items and compares the test results with reference values. Note: Measurement audit is a proficiency testing plan that conducts a "one-to-one" ability evaluation of a participant