acm panel fabrication Warp
The concave surface of the acm panel fabrication shall be placed on a horizontal stand. the straight steel ruler with 1 000 mm long is vertically set on the upper surface of the panel,and then another straight steel ruler with minimum hatching of 0.5 mm is used to measure the maximum gap between acm panel fabrication . The maxi mum value of all measured values is taken as the test result.

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