此户外前维护系列适用于产品固定安装，场地狭小，方便维护。适配960*960钣金箱体，960*960压铸箱体，640*480钣金箱体。This outdoor front maintenance series is suitable for fixed installation of products, with a narrow space and convenient maintenance. Suitable for 960 * 960 sheet metal box, 960 * 960 die-casting box, 640 * 480 sheet metal box.