Study is made of the influence of various tech n ical factors on the characteris ties of crys talline W powder so as to produce the said new produc t for special purpose. Successful technology is found for the said product through special measures such as reduction with additiyes to increase the particle size: ball milling for better powder fluidity; solvent scrubbing for the decrease of oxygen content.

The technology of the K2TaF7 sodium reduction for Ta powder production at home and abroad has been summarized. And its prospect is given.

Technical process and application of indium are described ,and its future is also predicted.

Oeyeloplnent of the laser technique and application of rareearth elements in the laser materials are briefly described. Suggestions are put u 3 for the development of Hunan's rare-earth laser materials.

This paper reviews fluorides CVD methods for refractory metals in CIS countries, including modern development of the equipment and products.

In this paper the self-propagating high-temperature synthesis process have been investigated, and advantages and characteristics of the SHS process have been described.