Brittleness is a vital weakness of ceramicas, strengthening and toughening ceramic matrix composites by carbon fiber is one of discussed focuses in the material science research field.

陶瓷材料的脆性是其致命弱点，通过碳纤维补强增韧陶瓷基复合材料是材料学术界关注的热点之一。

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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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