TRILUX has introduced quality assurance systems (QS) for all product areas which include development, construction, purchasing, production, quality management, distribution, marketing and customer service. The target is a zero defect strategy with preventive activities, supplemented by systematic monitoring of production processes. Upon verification by licensed certification companies, it was confirmed that the TRILUX quality assurance systems fully complied with international quality standards according to EN ISO 9001. These quality assurance systems serve to ensure the quality of TRILUX indoor and outdoor luminaires including all product-related activities. This includes, among other things, spare parts supply. Furthermore, the QS certificates document that quality systems are implemented according to international standards. Regular and successful audits by the certification companies guarantee this. For the user, these certification documents (see figure) mean additional decision security. They guarantee that relevant quality aspects are considered in the certified company.