Table 1.
Pellet densities of 6 mm-diameter according to the applied pressure and wood species (Unit : kg/m³)

Pressure (MPa)	Wood species
	Populus davidiana	Quercus mongolica	Robinia pseudoacacia	Pinus densiflora	Pinus rigida
	50	1120	1121	1121	1176	1170
100	1202	1186	1191	1203	1201
200	1267	1231	1231	1214	1212
300	1280	1264	1252	1257	1223