Specifications and features:
1) Two types of drive, gear and chain, suiting the requirement
   of various customers
2) Low noise
3) Remote control with electronic anti-theft function
4) Compact and light weight
5) Long operating life
6) Excellent performance
7) Manual operation in available during power break down主要功能：1.有齿轮传动和链条传动两种形式，适应不同消费者的需求2.可远距离控制操作，具电子防盗功能3.使用时噪音低，功耗低，振动小，其中JGS-II型具有自锁性，制动平稳4.体积小，重量轻，寿命长，性能好5.停电时可用手动操作，使用方便