improve price
1.Whether by influencing prices (through taxation or fiscal incentives) or setting absolute quantities (via tradable permits), they improve price signals, allow industry greater flexibility in meeting objectives, and give firms a longer-term incentive to pursue technological innovations that further reduce adverse impacts on the environment.
10.The results of comparison experiments and demonstrations conducted in multiple locations in2001-2003showed that HKJ1#could obviously improve tobacco leaf structure and increase the percentage of high class leaf,the percentage of orange leaf and the average price of raw tobacco by12.51,22.03and1.19yuan/kg respec-tively.

