汉译英，谢谢~

Dause is a subsidiary company of a listed corporation, it mainly produces H1200, has demanded the sample from A and B Corporation, but could not meet the condition of achieving the customers' requests. Our sample result has not come out. The opposite side requests that the particle size should be under the degree of belowing 500 nanometers ,namely as 0.5 micron, which the requested craft is very high, at present the opposite side themselves grind the cost according to it that was said to be in about 10 yuan, but the production ability is very low, which is unable to meet the production demand. It estimates that the yearly dosage is above 20 tons.
纯手译,望采纳

Dause, is a subsidiary of a listed company, the main production H1200, from A and B companies from the sample, but can not achieve the requirements of customers. Our sample results have not been successful. The other requirements of the small size of the 500 nanometer is below 0.5 micron, the requirements of high tec