Maintain a high level of market intelligence by monitoring the performance of competition product and analyzing price change trend through close contact with customer.

了解竞争产品的价格与性能，与客户保持密切接触，分析价格变化趋势，掌握市场情报。

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The paper bases on the historical data of the price of grain in stock in the Tang Dynasty, dissertate the level and change trend of the price in detail on nine periods in the Tang Dynasty.

本文根据现存唐代粮价史料，对唐代九个时段通常粮食价格水平及其变动趋势进行了详细论述。

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The most important factor in producing a major trend change in the price of a stock, outside of economic conditions, is a change in the company.

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