The sun battery in UPS power supply system, Germany Germany sunshine and maintenance-free battery USES mostly.
在UPS供电系统中，德国阳光蓄电池大多采用免维护德国阳光蓄电池。
2
Maintenance-free brushless drive motor with frequency inversion, has high start torque and short acceleration time.
免维护高力矩无刷变频电机直接驱动，启动力矩大、加速时间短。
3
"Almost every material implemented in this home was done so to create a maintenance-free space that withstands the weather and betters with age," the architects said.