At present, domestic and foreign cities and towns gas commonly used agent for odorization tetrahydrothiophene (THT).
目前，国内外城镇燃气普遍采用的加臭剂为四氢噻吩(THT)。
2
Odorization pumps are specially designed diaphragm plunger metering pump, plunger travel of the exercise machine lock, each time to maintain a constant output.