Coal indicators correspond to Chinese and other chemical formulas

coal

standard

Chinese	Chemical Abbreviation
Moisture	Mt
Ash	Aad
Volatile	What
Total sulfur	St，d%
Heat	Qnet，ar
Gelatinous layer thickness	Y
Cohesion Index	G
Hastelloy grindability index	HGI
Air dry base	Ad
Received base	With
Dry basis	d
Dry ash-free base	daf
Dry mineral-free base	dmmf

Abbreviation

Chinese	Chemical Abbreviation
Full water	Mt
Internal waters	Mad
Ash	Aad
Volatile	What
Total sulfur	St
Heat	Snow

other

Internal water: The moisture contained when the plant turns into coal.
External water: water attached to the surface and cracks of coal during mining or transportation.