12
Mar.
31, 2025
13
Mar.
31, 2025
14
Mar.
31, 2025
19
Mar.
27, 2025
In order to learn and draw lessons from the development strategies and industrial policies of high-end CNC machine tool industries in developed countries, improve the level of my country's high-end CNC machine tool industry, and promote the development of my country's high-end CNC machine tool industry,
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20
Mar.
27, 2025
Differences phosphating and blackening
Blackening treatment: Blackening treatment produces a black oxide layer mainly by reacting with chemical reactants. It is mainly carried out using sodium hydroxide and sodium nitrite at 135-145 degrees Celsius and is more alkaline.
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