Hangzhou Xuanai Sci &Tech Co., Ltd., located at the National High-Tech Industrial Development Zone, is a new science and technology enterprise, which develops, produces and sells nano materials and other related products. 50% of employees of our company are professors, doctors and high-class engineers. Our company has developed many products, including single-wall and multi-wall CNTS, deodorizers and preservers for refrigerators of "Runvita" series, using natural & precious stone and nano materials, air purificants for automobiles and air-cleaners for computer rooms. The products are sold in the market and widely praised by the consumers. Nano materials are a new kind of materials greatly invested in by all developed countries for the development of science and technology in the 21st century, which can be comprehensively applied in architecture, electronic, medicati

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