WTJX.WTJX Company, established in 2004 and headquartered in Rizhao City, Shandong Province, specializes in providing customized hydraulic solutions for customers—from preliminary product design, development and selection, design finalization to after-sales service. Its core products include dump truck cylinders and hydraulic systems, cylinders for mechanical equipment, gas springs, construction machinery cylinders, electric cylinders, and hydraulic components, serving global industries such as commercial vehicles, smart mining, and construction machinery. As a core R&D and manufacturing base for hydraulic cylinders, hydraulic systems, gas springs (suspension), and hundred-ton-class electric servo cylinders, its primary products encompass customized components such as dump truck cylinders, energy extraction equipment cylinders, gas springs, construction machinery cylinders, electric cylinders, sanitation vehicle hydraulic cylinders, cold-drawn tubes, and rolling screw assemblies.