优点：

DIYI、ZHANYONGKONGJIANXIAO

传统的楼梯固定在一个位置，占用楼道上下的空间面积很多。而伸缩楼梯可以完全不占用楼下的任何空间，楼上也只占用不到1平方米的小空间。

DIER、GEREXIAOGUOHAO

SHENSUOLOUTISHIGELOUDEZHUANYONGLOUTI，ZAIANZHUANGSHIJIANGMENBANYUDONGKOUJINXINGMIFENG，SHISHINEIWENDUYUSHIWAIXIANGGELI。

DISAN、CAOZUOFANGBIANSHENGLI

SHENSUOLOUTIDESHOUFANGSHIYONGDOUFEICHANGQINGSONGZIRU，CAOZUOFANGBIANLINGHUO。

DISI、YINBIXINGGAO

ANZHUANGSHENSUOLOUTIZHIXUYAOZAIGELOUYUFANGJIANZHIJIANKAIYIGEXIAODONGKOU，BINGQIEKEYIYONGYUDIAODINGTONGYISEXIDEMENBANJINXINGZHEDANG，BUSHIYONGSHIYONGMENBANDANGZHULOUTIJIUKEYIHENHAODIYINZANGZAIGELOULIMIAN，GENGHELIDILIYONGLEKONGJIAN。

QUEDIAN：

DIYI、SHENSUOLOUTISHIZHUANMENWEIGELOUSHEJIDE，YINCIQICHENGZHONGLIXIANGDUIYUCHUANTONGLOUTIHUIBIJIAOXIAO，DAYUEZAI200KgYINEI。SHIYONGSHIRUGUOCHAOGUOCIZHONGLIANGFANWEIBIANHUIYINGXIANGQISHIYONGSHOUMING。

DIER、YIBANSHINEIGELOUSHENSUOLOUTISHIHECENGGAOZAI2—3.2mDEGAODU，QIANZHUANGDEDONGKOUCHICUNYIBANSHIZAI0.7m×1.2mDEFANWEINEI，YINCIBUFANGBIANDAJIANWUPINTONGGUO。