Zhenhai Petrochemical Jianan Engineering Co., Ltd.,（ZPJE） is a former subsidiary of Sinopec Zhenhai Refining & Chemical Company. Since 2008, ZPJE is an independent joint-stock company established in the Ningbo region in the eastern coast of China.

ZPJE is specialized in spiral tube heat exchanger (STHE) and tube manufacturing, thermal and hydraulic calculation, R&D and project management with more than 700 employees.

ZPJE owns Pressure vessel rule design and manufacturing licenses in China and ASME authorization certificates of U & U2.

Meanwhile, it has obtained ISO 9001:2015 Quality Management System Certification, ISO 14001:2015 Environmental Management System Certification and ISO 45001:2018 Occupational Health and Safety Management System Certification.