27160000

Electrical energy.

2801

Fluorine, chlorine, bromine and iodine.

28011000

Chlorine

28012000

Iodine

28013000

Fluorine; bromine

28020000

Sulphur, sublimed or precipitated; colloidal sulphur.

2803

Carbon (carbon blacks and other forms of carbon not elsewhere specified or included).

28030020

Acetylene black

28030040

Other carbon blacks

28030090

Other

2804

Hydrogen, rare gases and other non-metals.

28041000

Hydrogen