It is also a waste product that would otherwise be burned, and is therefore cheap.
稻草还是一种最后要被烧掉的废弃物，因此很便宜。
The product such as to when welding use blank product operation, avoid high temperature burned plating layer.
产品如要电焊时请采用毛坯的产品进行作业，避免高温烧坏电镀层。
The high quality limestone is burned by high heat, through the chemical reaction, filtration, drying, and sieving to reach the finished product.
优质石灰石经高温煅烧，经化学反应、过滤、干燥、筛粉等工艺制作。
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