MUSCATINE, IA — Workplace furniture manufacturer, The HON Co. announced a major expansion in its Scientific Certification Systems (SCS) Indoor Advantage Gold certifications. These certifications, which encompass 32 series of chairs, mark The HON Co.’s 63^rd product line to receive either SCS Indoor Advantage or SCS Indoor Advantage Gold recognition. Gold certification signifies a product has met the strictest criteria for   U.S. indoor air quality standards.