Inspection, quantity and quality control, supervision and verification of the quality and quantity of raw materials, commodities, manufactured, semi-manufactured and transformed goods or goods of any other nature and their conformity with national and international norms, laws, rules, practice and standards and with clients' contractual requirements; inspection, quantity and quality control, supervision and verification of the planning, building, construction works and maintenance of machines, industrial equipment and plants; inspection, quantity and quality control, supervision and verification of production or processing methods and manufacturing processes for equipment, devices, appliances, and the methods of measurement, sampling and analyses for same, and product quantity and quality control procedures; testing, measuring and laboratory analysis of consumer and industrial products and materials; inspecting, assessing and auditing the products of manufacturers and service providers in order to determine and ensure compliance with national and international norms and standards and to verify compliance with such national and international norms and standards for purposes of certification