英文關鍵字
polystyrene
factory
polyethylene
raw
polypropylene
granulate
granules
industry
pellets
plastic
petrochemical
chemical
commodities
chemistry
material
technology
polymer
hands
thermoplastic
spunbond
background
industrial
masterbatch
manufacturing
drop
recycling
plant
white
abstract
modern
preform
product
production
closeup