Whistle valves are made of a copper-silicon alloy.
雾笛阀门由铜硅合金制成。
Building valves - Manually operated copper alloy and stainless steel ball valves for potable water supply in buildings - Tests and requirements.
建筑物用阀。建筑物内饮用水给水用手动铜合金和不锈钢球阀。试验和要求。
The main sales: stainless steel valves, carbon steel valve, cast iron valves, copper valve, health level material such as valve products.
主要销售：不锈钢阀门、碳钢阀门、铸铁阀门、铜阀门、卫生级阀门等材质产品。
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