An process of ion bombardment heat treatment for high dimension precision slender rods was discussed through treating the valves with different loading ways, heating temperature, and heating ways.

For developing high efficiency and secure coagulants, Potassium ferrate prepared by hypochlorite oxidation method was used in the treatment of raw water with low temperature and low turbidity.

The coating with high bond strength was synthesized by means of treatment of the gradient liquid phase sintering or medium temperature reactive sintering.