Not all solar panels are the same or of the same quality. The general belief is that, by having a 25-year guarantee on practically all brands of solar panels on the market, we trust that in the long run they can guarantee us exchange or repair, but it is not. We also expect the product to have a balance between the quality of the product parts and the cost-effectiveness.
Having a Tier 1 certified product builds confidence in the consumer and guarantees its profitability and long-term product warranty. For this reason, we recommend everyone that if you are trading with a solar panel company, verify that the product you are about to acquire is in the Tier1 category
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isabel suarez
February 4, 2020