本发明生产工艺简单，产品质量稳定，节约能源，降低成本，并且无毒害，不造成环境污染。

Its advantages are simple productive technology, stable quality of products, low cost and no poison.

youdao

本发明生产工艺简单，产品质量稳定，节约能源，降低成本，并且无毒害，不造成环境污染。

Its advantages are simple productive technology, stable quality of products, low cost and no poison.

youdao