Polycrystalline diamond tools EDM technology

It is the participating countries and scale of the impact is one of the larger international invention exhibition. By the National Science and Technology Commission and the National Federation of Trade Unions delegation to China Association of  polycrystalline diamond  in the name for the first time invited to participate in April 19, 1985 to 28 in Geneva, Switzerland at the 13th World Exhibition of new invention . The country participating nineteen invention is SSTC with a positive, cautious,  cutting tools  approach, through access to the world after the patent literature carefully selected. Nineteen projects in three is to obtain the National Invention Award projects,  grinding wheel  "polycrystalline diamond tools EDM technology" in 1984 won the National Invention Award second.