特级毛片免费看,手机看片福利日韩国产,国产大陆亚洲精品国产,久99视频,国产福利在线永久视频下载,欧美一级高清免费a,看久久久久毛片婷婷色

1, the structure is compact, the starting torque is big, the thrust big---12 meters wide, the single fan 600 kg gate easy switch.

2, easy installation---general electrician without experience can easily according to the manual installation.

3, beautiful shape, simple structure, full-featured, economical and practical---remote control switch door, stop, overheat overload timeout protection.

4, the working method is reasonable, the failure rate is very low--so far domestic tens of thousands of users, the rate of repair is very low.

5, electric or manual, all by the user----when the power failure, can be used for special clutch key switch to manual state.