To sex of shading cloth shading differentiate, have a very simple method, illuminate shading cloth to lamplight namely, the penetrable degree be clear at a glance of its light.
英
美
- 对于遮光布遮光性的鉴别,有一个很简单的方法,就是将遮光布对着灯光照一下,其光线的穿透程度一目了然。