每一个城市都有着自己的城市广场,当我们在城市广场上面行走的时候,我们都可以注意到我们的脚下是一块块的砖石铺陈而成的平坦地面。也很容易的看到各种各样的井盖模具,用于建设在我们生活中。
Every city has its own city square. When we walk on the city square, we can notice that under our feet is a flat ground paved with bricks and stones. It's also easy to see all kinds of manhole covers, used for construction in our lives.

但是并不是所有的井盖模具都是轻而易举的制造出来的,第一步就是井盖模具的选择,我们所需要的井盖模具不能是随意挑选的,必须选对正确的材质。
However, not all the well cover molds are easy to manufacture. The first step is to select the manhole cover mold. The manhole cover mold we need can not be randomly selected, but the correct material must be selected.

选择塑料的材质在硬度上面也是非常的好的,而对于井盖模具来讲,在硬度上面的要求是非常的高的,所以这一种模具采用塑料的原料制作是非常的好的。
The selection of plastic material in the hardness is also very good, and for the well cover mold, in terms of hardness requirements are very high, so this kind of mold using plastic raw materials is very good.

使用塑料的原料生产，这一个现象的原因是因为这一种材料具有很好的价格优势,因为塑料的材料具有比较便宜的优点，物美价廉。
The reason for this phenomenon is that this kind of material has a good price advantage, because the material of plastic has the advantage of relatively cheap, good quality and low price.