In the environment of lowtemperature,the way of compound chemicalfeed that PAC (polyaluminium chloride) is compound with PAM (polypropylene amide) has higher efficiency than single coagulant way through the flocculation experiment of treating lowtemperature domestic sewage.

The application of compound-projection film in physics teaching;

Research on preparation of ultraclean coal by floatation with MJ complex reagent;

Experimental study of new style KJ complex reagent;

Performance of slime flotation of KJ complex reagent

Compared with butyl xanthate and isobutyl xanthate,the flotation tests show that multiplex xanthate has stronger collecting ability and better selectivity,it is an excellent collector of complex and refractory copper ores.

Then the complex drugs containing both aspirin and nicotinic acid were obtained by copolymerization of A and B.

Full bore perforator with combustible & expendable charge tube is made of composite powder.

The combustion characteristics of potassium perchlorate composite powder were studied by DSC,electron microscope scan and burning test in closed-bomb.