ZING™ is the leading manufacturer of eco-friendly safety products. Our products include lockout/tagout, safety signs, personal protective equipment, and safety training materials. We manufacture our products with high-quality recycled or rapidly renewable materials. Most of our line is UL Validated for recycled content. Underwriters Laboratories (UL) is a third-party independent organization that certifies recycled content, landfill waste diversion, and compliance with green codes and standards. We want to make sure our customers are protected from green-washing, a marketing tactic in which a product's eco-friendliness is exaggerated.