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Metal nanopowders are new materials with strange or anomalous physical and chemical properties, such as copper to nm, without conduction, while insulating SiO2 begins to conduct e..
The paint on the metal surface, because the paint and metal surface bonding is stronger, so the general detergent can't do anything. If the use of gasoline, kerosene and other was..
According to the different performance requirements of the workpiece, according to the different tempering temperature, tempering can be divided into the following categories: (a..
Rhenium Metal Pellet/In..
