Trusted Engine Kits Manufacturer

About GELWERK

GELWERK is the brand of Hangzhou Jupin Auto Parts Co., Ltd., a professional manufacturer and supplier of timing system and engine repair parts for the global automotive aftermarket. Our product portfolio includes timing belt kits, timing chain kits, water pump repair kits, engine repair kits, bearing repair kits, and a wide range of other engine components. Certified to ISO/TS 16949:2009 and ISO 9001 standards, we are committed to delivering reliable products, consistent quality, and long-term value to customers across North America, South America, and Europe.

25+

Years Experience

200+

Team Members

1000+

Products

5000+

Global Customers

99.5%

On-Time Delivery

Why Choose Us

From product development and manufacturing to strict quality inspection and responsive customer service, GELWERK provide reliable timing repair solutions for global markets. With modern production facilities, engineering support, and flexible OEM/ODM capabilities, we help customers build competitive products and long-term business partnerships.

Strict Quality Control

100% Quality Inspection

OEM & ODM Service

Flexible Custom Solutions

Modern Factory

State-of-the-Art Equipment

Professional Team

Fast & Responsive Support

Our Factory

GELWERK operates a modern manufacturing facility equipped with advanced production machinery and precision testing equipment. Every process is carefully managed to ensure consistent quality and dependable performance.

From manufacturing and quality inspection to packaging and shipment, each order is handled with strict standards to ensure reliable products and on-time delivery worldwide.

The GELWERK Story

2000

Industry Beginning

Founder Jerry Liu entered the automotive parts industry in Hangzhou, China, laying the foundation for GELWERK through industry experience.

2003

Company Founded

GELWERK was founded to manufacture reliable engine kits for the automotive aftermarket. Our focus has always been on consistent quality and dependable performance.

2007

Factory Established

We established our own factory in Xiaoshan, Hangzhou, bringing us a step closer to achieving GELWERK’s brand vision.

2015

Global Expansion

By participating in international exhibitions such as AUTOMECHANIKA and EXPOPARTES, we took a significant step into the global market.

2022

Business Growth

With growing business and team size, we moved into a larger office and upgraded R&D and testing facilities at our Hangzhou factory.

2025

Digital Transformation

GELWERK embraced digital transformation by launching official accounts on X, YouTube, and Facebook, strengthening connections with global partners.

Certifications

Our certifications and test reports reflect our commitment to quality, compliance, and reliable manufacturing. We continuously improve our management systems to deliver products customers can trust.

Verified Supplier Certification
Design Patent Certificate
Utility Model Patent Certificate
SGS Test Report
Certificate of Compliance
CE Certification

Meet Our Team

Get to know our dedicated team whose expertise and experience ensure your needs are met with precision.