... tracking system,PV trackersolar tracker,solar actuator,solar tracking system,PV tracker,SPZTF-S-18 mechanical life: 30yea Automatic dual-axis solar tracker ,solar tracking system ... ,PV trackersolar tracker,solar actuator,solar tracking system,PV tracker,SPZTF-S-18 Peak power: 18kw Track-driven power: ... life: 30years Automatic dual-axis solar tracker,solar tracking system