And then,according to fact,this paper propse merchandise step type price,and set up optimal production plan model.

Based on the example of auto industry, the price gradient spatial control model is used to make empirical analysis of the substituting effect of non—tariff measures on tariff barrier and the con- clusion is arrived at that, under the situation of largely cutting tariff, non—tariff measures can effec- tively protect related industries.

Combined with the power supply and demand situation in Hefei district, the article analyzed the incentive measures of DSM in this area, proposed to take advantage of PE to start up DSM market, and used peak power load price and stepped price to further encouragement.

Using game theory in water price,this article analyzed the behaviors of water authorities,Water-supplying enterprises and water-using industries,and obtained the conclusion that on the basis of water quota the step water price is the best option for sustainable economic development.

He supplies different pricing models according to different types of products,then suggests the systematic three-step-ladder cost pricing model,and finally analyzes this model from the perspectives of economic competition,social system,and technical .

By selecting the South-North line from urban central district to Baoshan district of Shanghai, and collecting housing price data along the line where both the second-hand houses and newly developed houses are located inside the inner ring, between the inner ring and the middle ring, between the middle ring and the outer ring, outside the outer ring, the authors analyze the price gradients.