Jul 30, 2018
From January 1, 2018 onwards, the \"People\'s Republic of China Environmental Protection tax\" implementation, environmental tax on sewage charges and mineral development protection fees have historical lineage. According to the regulations, e
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Jun 14, 2018
1.Hot dip galvanizing process pretreatment using pickling, phosphating process, the surface of the workpiece will have acid, lye residue, leaving the hidden danger of corrosion, so that the hot dip galvanized layer is easy to fall off; spra
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Jun 14, 2018
Thermal spraying is used in a variety of coating processes, including plasma spraying, HVOF spraying, arc spraying and flame burning spraying. These processes are also known as metallization sprays. Flame burning spray (particle speed range
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