quality control-longener

Longener

To supply you the best quality China steel products

Longener

To supply you the best quality China steel products

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PAINTING THICKNESS TEST
COAT BENDING TEST
IMPACT TEST
CROSS-CUT TEST
LUSTER TEST
COLOR DIFFERENCE TEST
Paint coating in the Boiling water testing
Impaction and pressure test
Salty water spray test
TENSILE TEST
Hardness test
Salty spray tester

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Quality Control

We have the strictest quality control system