Introduction: The CTT brand has a strong and reliable image, and the CTT Group ¡¯s sense of social responsibility gives its corporate mission to ensure the citizens, public administration, companies and institutions by establishing innovation and environmental sustainability and strengthening the structural value of the brand and new values. The connection between them reaches a new dimension. Therefore, CTT further clarified its responsibility for environmental protection and meeting customer needs. Recognizing this, CTT reduces its environmental impact by investing in new products and services. Due to its long-term experience and the quality and considerate services provided to the public, CTT has won many honors and a reliable corporate image.