Combine the research of complicated network theory,structure the hierarchy network model of used product that have the pullulation characteristic and preferential connection characteristic by chosing a primary recycle center as the key node,a few recycle centers as the centre node and a lot of recycle points surrounding.

Development of recycle and trapping of CO_2;

Study on properties of hydrogen storage alloy recycled by a new method;

Study of Recycle of Wasted PS Foam;

Improvement of CO_2 Recycling and Cooling System;

The technology of complex tower and its application in the recycling of hydrogen chloride;