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... ings cannot be stacked together, they are not things of uniform specifications. If they are to be stacked together, you must first hit the bracket, that is, make an outer frame for each thing to ensure that it will not be compressed during the load-bearing process. hurt.
This requires a lot of money, and there are also various labor costs and mechanical costs. After they are piled up, it will be a huge project to take out one of them.
In the end, they can only be as they are now, t ...
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