Starting with the processes of cots operation,manufacturing and maintenance,comprehensive introduction is done to the two non-surface treatment cots regarding selection of the cradles,spacing block, top cradles as well as grinding intervals and regrinding intervals,which is for info of spinning hi-quality colored yarn.

By comparison of the non treatment cots both domestic make and overseas make in trial spinning,conclusion is made that the cot made by Armstrong is better than those of domestic make in quality.

Introduction is done to the nontreatment cots regarding the key points in manufacturing,application condition,and scientific management.

Expatiation is done to the features and existing problems of nontreatment cots.

Effect of fiber surface treatment on the microstructure and mechanical properties of mesophase pitch-based C/C composites;

Influence of NiTi alloy fiber surface treatment on shear strength of resin matrix composites;

Effect of surface treatment methods on properties of adhesive;

Continuous surface modification of UHMWPE fibers;

Experimental research on surface modification by EDM through TiC semi-sintered electrode;

Synthesis of addition liquid vinylsiloxane rubberⅡ.Influence of surface modification of fumed silica on properties of silicone rubber;