The technique has the advantages of wide source of materials, low cost, simple production, convenience and practicability.

该技术原料广泛，价格低廉，制作简单方便实用。

youdao

The technique has the advantages of wide source of materials, low cost, simple production, convenience and practicability.

该技术原料广泛，价格低廉，制作简单方便实用。

youdao