Patent fair brings ideas to life
By Zhang Xiaomin in Dalian, Liaoning province | China Daily | Updated: 2012-09-19 08:10
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An exhibitor explains his company's patented light-controlled lock to visitors at the fair in Dalian. Chen Debin / for China Daily |
For Cui Yongzhu, a professor specializing in textiles at Dalian Polytechnic University, it was a familiar talk as he described his breakthrough for processing cashmere and wool using chitosan, a substance extracted from the exoskeleton of crabs and shrimp.
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