.
ลงทุนเพียง 4,000 บาท ได้ไฟฟ้า 12 volts สูบน้ำขึ้นมาทำสวนได้ 2 ไร่
 
 
solar water pump : nunkorat | April 21, 2009 :: simple solar water pump for organic farm
 
nunkorat 3 months ago :: effect of increase intensity of light 2.5 time larger than normal light ,

 increase amp same ratio. effect of heat up less ::nunkorat 3 months ago

 
 
solar water pump : nunkorat | August 06, 2008 :: 30 W. pannel direct DC12 Volts. to water pump from car glass shower