燃やす
environmental
alternative
background
bio
biofuel
biological
biomass
brown
calculation
calculator
compressed
cut
cutout
cylinder
eco
ecological
ecology
economy
energy
fire
fireplace
firewood
fuel
granule
heap
heat
industry
islands
isolate
isolated
mass
material
natural
nature
out
pellet
power
recycling
renewable
renewable energy
roll
timber
white
winter
wood
wooden
定額
Wooden pellets, biofuel isolated on a white background. Ecologic fuel made from biomass and calculator. Renewable energy source.の素材 [FY310186534594]
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