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TrinaSolar are one of the few PV manufacturers that have developed a vertically integrated business model from the production of crystalline ingots, wafers and cells to the assembly of high quality modules. Producing each step of the value chain in-house helps to ensure that we deliver high-quality and cost-effective products to our on-grid and off-grid commercial, industrial, institutional, residential and utility scale customers around the globe.

We design, develop, manufacture and sell solar modules. Solar modules are arrays of interconnected solar cells encased in a weatherproof frame. They produce standard solar monocrystalline modules ranging from 165 W to 240 W in power output and multicrystalline modules ranging from 215W to 240 W in power output, built to general specifications for use in a wide range of residential, commercial, industrial and other solar power generation systems. The variation in power output is based on the conversion efficiency of the cells used in our solar modules, as well as the types of cells. We assemble solar modules either from monocrystalline or multicrystalline cells. We also design and produce solar modules based on our customers' specifications. Our solar modules are sealed, weatherproof and able to withstand high levels of ultraviolet radiation and moisture. We sell our modules under our own brand.

As of December 31, 2008, they had an annual module capacity of 350 megawatts (MW). they expect to increase their total annual production capacity from ingots to solar modules up to 550MW by the end of 2009. 

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