The invention also has the merits of production craft simple, production and application not having pollution, its cost low, easy to operate, application scope wide, and service life long and so on.
本发明还具有生产工艺简单， 生产及应用均无污染，而且成本低，使用方便，应用范围宽，使用寿命长等优点。
The invention also has the merits of production craft simple, production and application not having pollution, its cost low, easy to operate, application scope wide, and service life long and so on.
本发明还具有生产工艺简单， 生产及应用均无污染，而且成本低，使用方便，应用范围宽，使用寿命长等优点。
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