Hackney Ladish - PCC Energy Group

Harrington Industrial Plastics

Hart Cooley

Haws Corporation

Heat Flo Products

HeatLink Group, Inc.

Heliodyne, Inc.

Hercules Industries

Highland Tank

Highland Tank

Hilti

Hoeptner Perfected Products

HOLDRITE

Holyoke Fittings

HPS Controls

HTP

Hubbell Water Heaters

Hunan Standard Steel Co.,Ltd

Huntington Brass

Hydrolevel Co.