By the dynamic corrosion test bo observe the corrosion and dirt form of picking inhibitor IS-138 and citric acid inhibitors 1# to films,and simulate the acid-washing conditions of 101-C exhaust boiler,it found out th optimum picking inhibitor formula for overhaul to reduce the costs.

Application of work place tool chests to individual hydraulic prop overhauling process;

Management Practice of Blowing-on and Production of No.3 BF after Overhaul and Reformation at Liugang;

Application of Computerised Network Analysis Techniques in Overhaul of Heavy Electric-shovel;

Grey system theory based prediction of speedometer readings of automobile during heavy repair period;

In general management of equipments the heavy repair should be replaced by the active maintenance to lower the repaired level extendedly.

Examining and Repairing of 15t Double Cantilever Gantry Craneduring Overhauling Process;

Monte Carlo simulation for combinatorial optimization of risk-based overhauling and improved replacement;

Several key points for major repairing quality control of industrial boiler;

6 BF at Jigang, with the measures of optimizing the plan and intensifying the constructing network management, the time limit for a project of major repair reconstruction is only 38 days.

Various technical modification items, such as secondary mixing drum,muticyclone,preheating manner of mixture,single-roll crusher, loosener etc,in the major repair of sinter plant , Panzhihua I&S Co.

Based on the development history of the sidetracking technology in China, the development trend of workover sidetracking technology in China is envisioned in light of the status quo of workover sidetracking technology.