DB31/ 49-1990
Rated standard for electromechanical power consumption of impeller aerator and pellet feed (English Version)

Standard No.

DB31/ 49-1990

Language

Chinese, Available in English version

Published By

Shanghai Provincial Standard of the People's Republic of China

Latest

DB31/ 49-1990

DB31/ 49-1990 history

• 1970 DB31/ 49-1990 Rated standard for electromechanical power consumption of impeller aerator and pellet feed