Reuse of waste product for inner bores of spherical ball bearing;

We must develop the mechanical recovery of the waste product in PCB.

The paper describes the new development of the physical treatment in waste product on PCB,it is importance to renewable resources on PCB industry.

At present, all losses of waste products are attributed to the costs of products, and this will be unfavorable to the cost calculation and cost control.

Influence of the wasters of the piezoelectric ceramic products in the different procedures to damping property of vibration absorptive chloro-butyl rubber;

Waster Analysis and Overhaul of R-Type Core;

The article analyses the reason why the false waste products appear during the course of manufacturing mechanical parts because of the disagreement between the measure datum and the design datum.

The phenomenon and reason of the false waste products in machining are analysed thoroughly.