This produce is short production period, moderate reaction, simple technology, easy source of other materials.

该产品生产周期短，反应温和，工艺简单，原料易得。

youdao

This produce is short production period, moderate reaction, simple technology, easy source of other materials.

该产品生产周期短，反应温和，工艺简单，原料易得。

youdao