For the first time industrial waste, such as ash from the soap-boilers, was collected in the cities and sold in the country as artificial fertilizer.

工业废料，如煮皂炉里的灰，第一次开始在城市里被收集，作为人工肥料在农村出售。

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For the first time industrial waste, such as ash from the soap-boilers, wascollected in the cities and sold in the country as artificial fertilizer.

城市首次收集工业废料， ， 比如煮皂的灰料和城市废料，并作为人工肥料售给乡下。

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We can use whiteness instrument to measuring the color of soap base. It is proved by experiments that the method is easy and fast. It is valuable for industrial application.

常见的比较测色计测量法精度较低，我公司在生产中将白度计应用到皂基色泽的检测中，实践证明，该方法比传统方法简便、准确、可靠，具有工业推广价值。

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