Sichuan Zhongwang Technology Co., Ltd. provides professional repair, direct replacement, and upgrade services for Coperion ZSK series extruder gearboxes, covering a complete range of specifications:

• Small to Medium Series: ZSK 45, 53, 58, 70
• Medium to Large Series: ZSK 92, 133, 177
• Large Series: ZSK 250, 320

Regardless of which ZSK extruder model you use, ADVS offers precisely matched repair and replacement solutions.

Based on nearly 30 years of experience in manufacturing and applying parallel co-rotating twin-screw extruders, our team has successfully broken through technical bottlenecks in extruder drive technology. The company's core technical indicators achieve high torque, high efficiency, long service life, and low energy consumption — far exceeding domestic industry levels and remaining on par with first-class extruder equipment manufacturers from Germany, Japan, and other countries.

In 2013, our team successfully completed the repair of a ZSK 250 large gearbox — a milestone project that marked the company's entry into large-scale petrochemical pelletizer unit overhaul services.

Since then, ADVS has continued to provide services for large pelletizer units in the petrochemical industry:

• 2020: Completed installation and commissioning of 400,000-ton PE and 260,000-ton PC units for the petrochemical industry
• 2021: Completed pelletizer overhaul services for SINOPEC Jinan Branch

In 2011, ADVS became an approved supplier for imported gearbox repair and replacement for GE Plastics Asia, demonstrating international recognition of its technical and service capabilities.

1. Direct Replacement, No Modifications Required: ADVS's replacement gearboxes are fully compatible with original ZSK mounting dimensions, enabling seamless replacement.
2. Performance Matching International Standards: Drive technology indicators remain on par with original German equipment — localization does not compromise performance.
3. Comprehensive Service Capabilities: Beyond gearbox repair, ADVS also offers design and upgrade services for complete barrels and screw elements.
4. Petrochemical Industry Validation: Proven track record in large pelletizer units, having withstood the test of continuous industrial production.