A20-S Stainless Steel SS304
Patent Certificate No. 专利号 : ZL 2012 2 0538591.4
Spring return in case of power is failure ( which is optional according to requirements)可选功能-断电关阀
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Patent Certificate No. 专利号 : ZL 2012 2 0538591.4
Spring return in case of power is failure ( which is optional according to requirements)可选功能-断电关阀