简要说明：上海威蝶阀门牌的超低温针型阀，超低温针型阀型号，超低温针型阀原理产品：估价：1，规格：15，产品系列编号：145648515456

低温焊接针型阀

英文名称：Low temperature welding needle valve

阀门型号：DJ21W-64P

阀门规格：DN10

低温焊接针型阀参数：

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