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Hot sell BST air oil transformer
Hot sell BST air oil transformer is easy and convenient for operation, it is usually matched with DBM hydraulic brake together.

As BST-2 and BST-4 air oil transformer air cylinder size is different, so their increase oil pressure ratio is different. BST-2 increase oil pressure ratio is 7, while BST-4 air oil transformer is 14, it is twice of BST-2 air oil transformer.
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