The Sigma test ensures RoHS Compliance Testing verifying products meet strict environmental standards. RoHS, or Restriction of Hazardous Substances, restricts the use of harmful materials like lead and mercury in electronics. This test rigorously examines components to confirm adherence to RoHS guidelines, assuring products are environmentally friendly and safe for consumer use. Compliance with RoHS regulations not only demonstrates a commitment to sustainability but also enhances marketability by meeting global standards for eco-friendly manufacturing.