Houston-based Powell Industries (nasdaq: POWL - news - people ) makes switchboards and other kinds of electric-power distribution equipment for businesses including commuter rail systems, utilities, and oil and gas producers.

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The company produces electrical steels for makers of power transmission and distribution equipment.

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Rounding out the top 10 where: Hangzhou Everfine Photo, a supplier of testing equipment, Shanghai CSG Smart Science, a supplier of power distribution products, Shandong Sinocera Function Material, a maker of ceramic powder for the electronics industry, Beijing Orient National Communication, a software maker, Jiangsu Yunyi, an auto parts maker, Boomsense, a supplier of repeaters, and Staidson Beijing Biopharmaceuticals, a chemicals products maker.

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Damage to the grid: Power surges and electrical system failure due to high loads can cause power outages and damage to BC Hydro equipment and infrastructure, including the premature failure of distribution transformers.

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