The utility model has the advantages of simple structure, reliable working safety, low cost, convenient maintenance, and high punching rate.
本实用新型结构简单，工作安全可靠，成本低，维修方便，穿孔率高。
The utility model has the advantages of simple structure, reliable working safety, low cost, convenient maintenance, and high punching rate.
本实用新型结构简单，工作安全可靠，成本低，维修方便，穿孔率高。
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