求翻译：在购买材料的时，需要到市场对材料的价格进行对比，定期对市场进行考察，以寻找物美价廉合格的原材料，从而来降低成本。提高利率是什么意思？

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With the purchase of materials, you need to market the material basis of the price comparison, regularly in the market, and to look for value for money qualified raw materials, thereby reducing costs. Increase the interest rate

When purchase material, needs to arrive the market to carry on the contrast to the material price, regularly carries on the inspection to the market, seeks the excellent in quality and reasonable in price qualified raw material, thus reduces the cost.Raises the interest rate

At the time of purchase materials, you need to compare market prices for materials, it discussed on a regular basis, to look for good qualified raw materials in order to reduce costs. Raising interest rates

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