carbon

chemical

chemistry

clear

colour

container

creation

development

ecology

element

energy

extrusion

factory

grain

grained

granulate

granules

hand

industrial

industry

isolated

lab

laboratory

male

material

molding

object

particle

petrochemical

plastic

plunger

polyethylene

polystyrene

process

recycling

regranulate

science

scientific

select

substance

synthesis

syringe

thermoplastic

tinted