An Analysis and Improvement of the Synchronization Collecting System of Four Rolls Mill of Twist Drill;

Absorbent properties of synthesized carboxylmethylcellulose grafting polyacrylamide with quaternary ammonium group to direct dyes;

Jet printing for textiles with direct dye jet inks;

In this research,fourteen typical direct dyestuffs in 6 types were selected to study their biodegradability and color reductions under facultative condition.

The trial qualification by us ing less-matched welding materials to weld high-strength steel;

Reviews of stainless steel welding materials standards at home and abroad;

Welding-quality analyzing system of HANNOVER and its application in test technology of welding materials;

Application of welding material on air conditioning;

Study on processing technology of welding material for steel parts during low-temperature running of locomotive;

Influence of polyvinylpyrrolidone on dyeing process of direct dyes;

Adsorption of direct dyes with multi-sulfonic groups on chitosan fibers;

Fixation of direct dyes with silica gel;

Technical requirement,state of the art and development current of high strength welding consumables used in hull welding;

Trend and issue of Chinese welding consumables in next 5 years;

Matching of welding construction material and welding consumables;