Changzhou Zhenglong Heavy Industry Co., Ltd. is a specialized manufacturer dedicated to the R&D and production of core components for heavy lifting and port equipment. Integrating design, manufacturing, and technical service, the company focuses on providing reliable OEM solutions for global ports, bulk cargo terminals, and heavy engineering industries.

Located in Changzhou, Jiangsu Province, our company boasts a mature team of 20 R&D specialists and 70 manufacturing professionals. Supported by a comprehensive quality management system, we have accumulated extensive experience in the field of heavy-duty lifting components and port machinery peripherals. Its main products include heavy-duty sheaves, hook assemblies, pulley blocks, drum assemblies, grab buckets, hoisting mechanisms, and customized structural components, which are widely used in port lifting equipment, bulk handling systems, marine applications, metallurgy, power plants, and large-scale engineering machinery.

Zhenglong maintains stable material control and mature manufacturing processes, enabling the company to provide tailored design and production services based on specific project requirements. Selected products can be supplied with China Classification Society (CCS) certification to meet port and offshore equipment standards. The company also develops in-house automated tooling and dedicated manufacturing equipment, continuously improving product precision, reliability, and production efficiency to support long-term cooperation with global crane and heavy equipment manufacturers.

With consistent manufacturing capability and strict quality control, Zhenglong has become a long-term OEM supplier for multiple large lifting and port equipment companies. Its products are currently serving various industrial and port projects both domestically and internationally.

Beginning in 2025, Zhenglong Heavy Industry entered into a strategic alliance with Wuxi Sino Link International Trading Co., Ltd. as its Authorized Global Distributor. This partnership is dedicated to expanding our international footprint, ensuring that global clients receive professional technical support and efficient spare parts supply directly backed by Zhenglong's manufacturing facilities.