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CERTIFICATIONS
QUALITY
JA solar panels are also Tier1 solar panels, which delivers the best gaurantees.
WARRANTY
JA solar panels has a 12year limited warranty on workmanship and products.
It also gaurantees 25years efficiency.
GAURANTEE
They gaurantee in the first year that the panels will not loose more than 3% efficiency and the following 24years the panels will not loose more than 0.5% efficiency each year.
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