Aug 31, 2026 Zhongneng Huajian has passed the re-audit of ISO9001 quality management system, ISO14001 environmental management system and ISO45001 occupational health and safety management system. The updated certification covers our full business scope: storage tank design, metal structure fabrication and on-site installation service.
Besides the three ISO certificates, our company maintains valid Class D pressure vessel manufacturing license and GC2 pressure pipe installation qualification. All these qualifications are the basic guarantee for our domestic and overseas orders. Every production procedure follows system requirements. Raw material incoming check, welding process control, finished product testing and document delivery are fully traceable.
For overseas buyers, complete and valid certificates are essential for project bidding and factory audit. Many clients arrange factory visits to verify our qualification documents and production management. Our audit team is ready to receive customer inspection at any time.
Continuous certification maintenance reflects our long-term commitment to stable product quality and standardized operation. Zhongneng Huajian will continue to strictly implement system standards in tank and pressure vessel manufacturing. Clients are welcome to contact us for certificate copies and factory audit arrangement.
