And the image 4.2 process phosphoric fate. In order to analyze with scientific process with various tools, such as testing consistently I was with Smut Test way. Testing the corrosion resistance with the tools Natural Salt Spray Tester andOxalic Acid Spot Tester test adhesion of the coating layer with air, Tape TesterMachine Micro-Hardness and Tensile and Tester scanning microstructure and thickness of coating layer, with SEM
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