PE --- Polyethylene
Single layer of polyethylene film that provides tremendous barrier properties. This material is ideal for situations when high fluids are anticipated.
LDPE --- is the low density version of PE. It has an excellent resistance to water, moisture and most organic solvents and chemicals (except ones with aromatic or chlorine content). This has less hardness, stiffness and strength compared to HDPE, but a better ductility.
HDPE --- is the high density version of PE . It is highly resistant to many acids, alcalis and solvents. high density polyethylene, It is harder, stronger and a little heavier than LDPE, but less ductile.
CPE ---Cast polyethylene. The product possesses good weatherproof, oil-proof, aging-resistant, chemical-resistant, ozone-resistant and fire-resistant properties.