determination of film hardness by pencil test(by hand)

Use a pencil with certain hardness No.(9H-H;B-6B;F;HB) to testing the coating hardness(on the surface plastic,wood of metal) Spec: Model:QHQ-A Weights of load:500g,750g,1000g Deter

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	electronic component	We strong in many famous brands, such as: AD, IDT, TI, EPSON, ZARLINK, SIMCOM, ZILOG, XILINXI, OTAX, BCD, NS and FREESCALE etc., especailly. We h...
	determination of film hardness by pencil test(by hand)	Use a pencil with certain hardness No.(9H-H;B-6B;F;HB) to testing the coating hardness(on the surface plastic,wood of metal) Spec: Model:QHQ-A Weig...
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