About 100 years ago, the tungsten wire production
technology was invented and human beings got the electric light. Since
then, tungsten and molybdenum have developed as an important material supporting
very large industrial fields, such as lighting, medical apparatus, traffic,
communication and broadcasting, and semiconductor.
Tungsten and molybdenum are the material
whose substitution is impossible. Moreover, these are the precious thing
resources produced only in the limited area. Therefore, human beings
have to use these resources effectively.
The companies in connection with the tungsten
molybdenum material in Japan meet together, and Japan Tungsten & Molybdenum Industries Assocition is contributing for promotion and development of this industry,