Polyvinyl chloride (PVC-U) pipe fittings formally received German DVGW double certification in June. This was the second success of the DVGW dual-certification of Polypropylene (PP-R) pipe and pipe fittings after the company’s first domestic pipe in the domestic industry. The domestic industry first, once again leading the industry.

DVGW (German Gas and Water Industry Association) has been specializing in the technical and economic development of water and gas since it was founded in 1859 and has always attached importance to safety, hygiene and environmental protection. DVGW certification is a standard set by the German Gas and Water Industry Association. Its logo means Germany's most authoritative product quality certification.

Up to now, the company's PVC-U pipe fittings have passed several international authoritative certifications such as German DVGW, British Kitemark, Australian watermark, European Union CE, American NSF and Russia GOST, etc. The full recognition of international customers is a true industry benchmark brand. The acquisition of multiple international certifications laid a solid foundation for AD to further improve the global sales network layout, participate in the new-type international competition, the “Belt and Road” cooperation framework, and the aid projects for developing countries.