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PANEL SOLAR HEATER
1) How heat is being transfer to solar panel?
2) If PVC is use instead of using copper, what happen to the water?
the h
3) How to keep the water warm? Wrap it using heat insulator.
MODIFICATION OF TOOLS TO HARVEST OIL PALM? DRAW AND LABEL..
1. stainless steel /aluminium – light /hard [ easier to harvest the oil palm and is durable ( not broken easier )
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