英文關鍵字
background
black
blue
business
chemical
chemistry
corrugation
crimped
disposable
engineering
equipment
factory
glove
grained
granulate
granule
granules
gray
height
industrial
industry
line
machine
manufacture
manufacturing
material
mix
mixing
new
packaging
part
pellets
pipe
plastic
polyethylene
polymer
polypropylene
power
production
raw
recycling
room
round
strew
structure
substance
supply
technology
thermoplastic
through
video
white