H & L Industries, Inc., WI 
H & L Industries is the manufacturer of the patented H & L Half-Log. The large diameter logs saves you labor and energy costs by incorporating log siding, insulation and sheathing into a single installation ste Read More>>

H. L. Clausing Inc., IL 
Engineering, Conductive Materials or Coatings, Scientific or Astronomical Mirrors, Optical Coating Services, Product Development, Coating Abrasion Testing, Optics available from H. L. Clausing Inc. based in Sko Read More>>