201321 - Metalloids (semi-metals) - 33 Manufacturers List

2013211100 - Chlorine - 7 Manufacturer
2013212000 - Sublimated sulfur precipitated sulfur colloidal sulfur - 2 Manufacturer
2013213000 - Carbon (carbon black and other forms of carbon not elsewhere classified) - 20 Manufacturer
2013214000 - Boron; tellurium - 2 Manufacturer
2013215000 - Silicon - 2 Manufacturer