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Now there are generally about 3,000 injection molders.
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Where is the place of work, basically 3,000.
Yes, most of them are plastic screws, and the iron ones are easy to rust
It is universal, and there are two sizes, which can be selected according to the size of the toilet.
What happened, what happened to you?
Get some concentrated hydrochloric acid brush, pay attention to safety, that is strong acid. After brushing, leave for 15 minutes and wash off with plenty of water.
This is the largest plastic base in the north, and I have a mold factory and a plastic products factory at home, but if you don't have specific drawings or samples, I can't give you an accurate quotation! Because the toilet seat mold is not the same, the size and thickness are not? Q472681339