A few days ago, the reporter learned from Sichuan's science and technology department that China's unsolved high-tech research project -- new polyaramid synthetic fiber paper (known as Kevlar fiber paper) was successfully developed in Sichuan, breaking the international monopoly of DuPont. Aramid fiber is an indispensable raw material for bullet-proof vests, aviation, aerospace, electrical and mechanical insulation, brake break-in and other modern high technologies. Since the 1960s, DuPont has monopolized the entire international market, with a market price of 10 tons per ton. Ten thousand dollars or more.