2023-08-23 相关分类：东莞铸造厂|深圳铸造厂|东莞铸铁厂|东莞球墨铸铁|深圳铸铝件|深圳铸铝厂|深圳翻砂铸铝|东莞翻砂铸造
数十项实用新型专利 升级更节能
More than 10 practical new patent furnaces are upgraded to more energy efficient