Study is made of the property of absorption and extraction of germanium from acidic solution. The results show that the resin can effectively separate and enrich germanium from Ge-containing solution with H2SO4 （pH 2.0-2.5 ） medium and tartaric acid. The adsorbed germanium can be quantitatively eluted with NH4 F solution. The preliminary study proved that the absorption was an anion exchange process.

Study is made of the vanadium extraction from sodium tungstate solution leached out of the secondary tungsten resource. The test results show that the vanadium separation is over 99% and the direct recovery of tungsten〉98 %.

In view of more stringent requirement for better electric property of the relevant cathode material with the rapid development of the electron beam and ion beam technology, the paper describe the development of multiple RE boride（La0.55Ba0.45 ）B6 and （La0.4 Eu0.6 ）B6 cathode material. The testing results showed that its electric property is superior to that of LaB6 cathode material.

The cutting property of the coated cemented carbide with gradient structure and those without gradient structure was studied. The effect of cobalt on the cutting properties of graded cemented carbides was studied. The cutting tests demonstrate that the cutting property of the coated cemented carbide with gradient structure is much better than those without gradient structure. The cutting life of the former doubles that of the later at hB=0. 15 mm. Meanwhile,the larger cobalt content resulted in better cutting property.

Study is made of the nature of colloid palladium,the process of recovery of metal Pd from waste colloid palladium solution and also the effect of dye on the covering power and deep-coating power of the acid coppering solution experiment. The results showed that the recovery of palladium metal is up to 98.79% by heating for colloid dissolution. The ￡ potential of colloid palladium is directly affected by the additive,and the colloid stability is affected to some extent by Na2 SnO4 and vanillin. Analysis and comparison is done on the leveling and brightness of the coating as well as the covering power and deep coating power of the coating solution. The best dye for the tests is Methylene blue and Rhodamine B,with covering power 75.05 %, 68.42 % and deep-coating power 85 % and 88 % respectively.

The property and particle size of SP-1,SP-2 and SP-C new complex ion exchange resin is studied and tested with laser particle size analyzer and SEM. The results shows that the effective size and uniform coefficient for SP-1,SP-2 and SP-C are respectively 161.12 μm ＆1.36;129.7 μm ＆1.67 and 130.79 μm ＆1.73. The observation results through SEM show the fine particles come from the cracked resin.

Presentation is made is made of the excellent properties （such as high activity, good oxidability, energy-saving,low cost and non-toxic） of new TiO2 photocatalyst. The paper briefly describes its nature, structure, catalysis performance, influence factors, doping modification, research and the applications.

Descrlption is made of the W-Cu composite materials in respect of its performance such as good thermal and electric conductivity and high-temperature oxidization-resistance,its wide applications in the high-tech fields of electron sealing,integrated circuit, national defense military, aerospace. In the paper is introduced the main applications and latest development of new technology of the W-Cu materials both at home and abroad.