In 2009, he jointly applied for the national invention patent "preparation of biomass fuel oil from rosin production and its deep processing residues"
Time：2020-08-19
In 2009, he jointly applied for the national invention patent "preparation of biomass fuel oil from rosin production and its deep processing residues"
In 2009, he jointly applied for the national invention patent "preparation of biomass fuel oil from rosin production and its deep processing residues"