According to the non-directional solidficasion limited feeding theory, using shrinkage time of casting iron casting and quantitative account of feeding rate, puts forward riser design by shrinkage module calculation method for iron casting.

Because of their difference of effective concentrate time between intermittental and continuous gravity concentrator,the former could not used the later's caculation mode,the author put forward a kind caculation method based on the work of intermittental gravity concentrator.

Time Compression Mode of Supply Chain Based on the Theory of Constraints;

Research on Supply Chain Management Based on Time Compression Strategy;

Analyzing the relevant literature on information flow within supply chain, the paper summarizes the research on the field respectively from the impact of information flow operation in total time compression programmer, the research contents and the methods and looks into the future of the research.