LONGi Solar was established in 2000 and has an annual operating revenue of 8.41 billion USD. The solar company is headquartered in Shaanxi, China and supplies more than 30 GW of high efficiency solar wafers and modules worldwide, about a quarter of global market demand. LONGi produces monocrystalline silicon wafers. .
Trina Solar was established in 1997 and has an annual operating revenue of 4.26 billion USD. The solar company is headquartered in Changzhou, China and has supplied more than 70. .
Both Trina Solar and LONGi Solar are tier 1 manufacturers. Tier 1 solar manufacturers use the best grade of silicon to produce solar cells. Higher the silicon grades the better.
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