space metallurgy
1.The Organizing Committee will send 50000 letters of invitation and 100000 tickets to national manufacturers, distributors, agents, high-grade purchasers, terminal users and scientific research institute, design institute and professional association, etc. in the relevant industrial fields of machinery, chemicals, electronics, electric appliance, metallurgy, forging, ship, communications, household appliance, building materials, auto, motorcar, plastics, packaging, medical treatment, mould, aviation and space flight, paper making, textile, environmental protection, water conservancy, electric power and agriculture, etc.
