Taking project of reinforcement and reformation of a certain hotel as example,the paper discusses many issues,such as determination of service life of follow-up design,selection of reinforcement method,determination of calculation method and means of reinforcement design.

Main factors influencing the service life of solid caustic soda pots;

Discuss on how to improve the service life of injection mold;

Experiences of Prolonging Service Life of Profiled Reed of Air-jet Loom;

Study on technology of increasing working life of cold extrusion terne die;

Ways to improve the working life of casting roller;

The effect of surfacing process technology on the working life of a cylinder sleeve;

The life of die and choosing and treatment of die materials;

A large-scale study on the extension of activated carbon′s life;

After improvement of heat treatment of sliding boots bottom in MG300/700-WD coal-winning machine,organization of sliding boots' bottom could be improved,rigid and wear-resisting of sliding boots' bottom could be raised very much,sliding boots have high fatigue limit,life of sliding boots could be raised,productivity could be raised.