The shenzhen citizens' music company ltd., in keeping with its corporate purpose of “quality-based, customer-oriented” business, adheres to the concept of “people-centred, people-friendly”, based on the four pillars of quality, efficiency, technology and services in the area of the construction and drainage market, is highly regarded by society as a well-known brand of construction for the drainage industry. Since its establishment in 2006, technology has continued to be created, product structures have been optimized, self-developed stainless steel pipe technologies have reached advanced levels at home and abroad and are now high-tech enterprises that combine r & d, production and marketing. The management of quality performance and science has evolved rapidly in recent years, and companies have been actively involved in the compilation of standards and norms that have been hailed as “with responsibility”. As one of the proponents of quality ...