The sun's rays travel 93 million miles to get to earth, and when they arrive, some are greeted by Trony Solar's products. A producer thin film solar cells used in electricity-producing solar panels, the company designs, develops, and manufactures amorphous silicon thin film cells (a common, versatile type of cell) used in home and building solar systems, consumer products, street and lawn lamps, and other applications. It sells its products primarily to distributors, resellers, and other customers in China, South Korea, and Thailand. Trony Solar was founded in 1993 by chairman and CEO Yi Li; privately-owned since inception, the company files an initial public offering (IPO) in 2009.