A、放线→安装水电管线→划龙骨分档线→安装主龙骨→安装副龙骨→安装罩面板→安装压条
B、放线→划龙骨分档线→安装水电管线→安装副龙骨→安装主龙骨→安装罩面板→安装压条
C、放线→安装水电管线→划龙骨分档线→安装副龙骨→安装主龙骨→安装罩面板→安装压条
D、放线→划龙骨分档线→安装水电管线→安装主龙骨→安装副龙骨→安装罩面板→安装压条