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Question:

How to define the poly solar cells as the A Grade one?

How to define the poly solar cells as the A Grade one?

Answer:

It is hard to tell if the poly solar cells you bought has no certificate, ganratees.
You can try to define it through the three factors: Efficiency, stability and durability.
A Grade poly solar cell is used in large power plant while B grade is for consumer usage for daily life
If the poly solar cells is high module conversion efficiency, through superior manufacturing technology Guaranteed -1% to +3%, it is very possibily the A grade.
You can check with the manufacturers first and they will tell you if the poly solar cells they are selling is the A grade level.

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