According to the requirements by binding mortar paste on the wall, and use plastic expand screw to anchorage.
用粘结砂浆按要求粘贴上墙，并使用塑料膨胀螺钉加以锚固。
The binder and binding post range in complexity from simple cover and screw to heavy-weight covers with posts riveted permanently into the cover .
从简单的封面和螺丝钉到重量级的封面，而螺丝柱则是永久性，用柳钉钉入封面内。参阅活页装。
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