我们要求这种塑料桶要在干净防尘的环境中生产，但是新的供应商没有这种生产条件。 We require this type of plastic buckets to be produced in a clean and dust-proof environment. However the new supplier does not have such a production facility.
It is a must that this type of plastic buckets to be manufactured in the dust free surroundings, but the new supplier does not have this condition.
We request this kind to model the feeding trough to produce in the clean dustproof environment, but new supplier not this kind of working condition.
We ask this in a clean plastic bucket to an environment of dust production, but new suppliers there is no such production conditions.
The plastic must be produced under clean and dustproof environment,but the new supplier has no such the producing condition.
We ask this in a clean plastic bucket to an environment of dust production, but new suppliers there is no such production conditions.
答：第一步 用温和的肥皂和水彻底清洁镜框。用海绵擦洗掉帧的表面的任何污垢或残渣。允许的框架完全干燥。 第二步 沙架中型砂纸表面。打磨表面，将创建一个粗糙表面的油漆，...详情>>
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