青云翻译

Research projects, resource utilization and to improve the quality of steel products is important.

Research on the subject, to increase resource utilization, and steel product quality is of great significance.

The topic research, to raises the resources use factor and the steel and iron product quality has the vital significance.

The research, to improve resource utilization and iron and steel product quality is of vital significance.

Research on the subject, to increase resource utilization, and steel product quality is of great significance.