We present timed Petri-netbased formulation approach for multi-product batch plants with complicated intermediate storage policies,such as:unlimited intermediate storage(UIS),no intermediate storage(NIS),finite intermediate storage(FIS),and mixed intermediate storage (MIS).

This paper analysis on transfer pricing strategy for multi-product firms.

They hasn’t produced one kind of product and tried to produce the multi-product.

Optimal ordering decision in multi-products competition environment;

Traditional price decision of multi-products for a single target is discussed.

Considering the effects of demand-pricing elasticity and mutual elasticity,assuming we formulate pricing for multi-products in the occasion of knowing the proportion of pricing fluctuation,which results in the most profit of the product after the change of the price during a certain period of time,and establish the generalized model of Quadratic Programming.

To optimize long-run average cost of the multi-item inventory system with more than one probabilistic resource constraint and with decaying products,several fundamental theorems of general multi-item inventory system with some resource constraints were derived firstly.

The storage capacity of multi-item is supposed to be LR fuzzy number,the paper defines the added inventory costa that ave related to unit storage space based on the inventory -value index and gains the optimal order strategy.