英文關鍵字
natural
rubber
elastomer
polymer
material
industry
goods
conveyor
belt
garden
hose
wheel
bottle
polyester
resin
bag
container
industrial
production
polyurethane
polybutadiene
thermoset
silicone
silicon
polyimides
vulcanized
teflon
ptfe
thermoplastic
polyvinyl
chloride
polystyrene
nylon
polypropylene
polyethylene
acrylic
polycarbonate
polylactic
acid
pla
canister
icon
motion
animation
hd
animated