About Hengjing
Hangzhou Hengjing Trading Co., Ltd. is an IATF 16949-certified Doosan Engine Parts parts supplier based in Hang Zhou China. Built on the principles of sourcing integrity, technical accuracy, and long-term partnership, we operate with an experienced procurement and logistics team alongside a 1,500-square-meter bonded warehouse to ensure every order is fulfilled accurately — from initial inquiry to final delivery.
Request a Free Quote →
What does HENG JING do?
Hengjing provides parts procurement solutions for buses, trucks, and heavy equipment to aftermarket distributors and end-users in over 30 countries worldwide. Our product catalog spans seven major categories—Doosan engine parts, Daewoo bus parts, Tata truck parts,transmission system parts, chassis parts, filters, and Develon excavator parts—featuring over 7,000 in-stock SKUs covering all major engine series and vehicle models.
One-Stop Solution
We provide a comprehensive range of bus,trucks, excavators,and attachments, simplifying your spare parts sourcing and saving you time and cost.
Tailored Customization
We offer OEM and ODM services, designing customized spare parts solutions that perfectly meet the unique needs of your project.
Strict Quality Control
All spare parts undergo thorough inspection and testing by our team of technical experts before being sold to ensure exceptional durability and performance.
How We Ensure Every Part Is Right
Hengjing is an integrated manufacturing and trading company. We partner with leading manufacturers in China to rigorously ensure the exceptional quality of our products. Our warehouse management team conducts thorough quantity verification and quality re-inspections before goods are loaded onto trucks.
Our manufacturer qualification review process, our 25-year-old part number database, and our pre-shipment inspection procedures all comply with IATF 16949 and ISO standards. These are the cornerstones of our ability to supply high-quality spare parts to distributors worldwide.
Talk to Our Team →Equipment We Supply Parts For
Doosan engines power a wide range of heavy equipment and vehicles worldwide. Whether you maintain a Daewoo bus fleet, operate Doosan excavators, run diesel generator sets, or manage Tata commercial trucks—Hengjing can provide the parts you need.
Meet Our Founder & Team
My name is Chaohui Jiang, founder and General Manager of Hengjing. I started this company in the early 2000s from a 30-square-meter shop in Hangzhou, with one goal: to make it easier for bus and truck operators around the world to source reliable Doosan and Daewoo parts.
Over the past 25 years, I have watched this industry evolve, learned every major engine series, and built supplier relationships that most distributors never get access to. Today, Hengjing operates a 1,500-square-meter warehouse with 7,000+ active SKUs, and our parts reach customers in over 30 countries across Southeast Asia, the Middle East, Africa, and the Americas.
What has not changed is our core principle: give customers the right part, at the right price, with complete honesty about what we have and how long it takes.
My name is Chaohui Jiang, founder and General Manager of Hengjing. I started this company in the early 2000s from a 30-square-meter shop in Hangzhou, with one goal: to make it easier for bus and truck operators around the world to source reliable Doosan and Daewoo parts.
Over the past 25 years, I have watched this industry evolve, learned every major engine series, and built supplier relationships that most distributors never get access to. Today, Hengjing operates a 1,500-square-meter warehouse with 7,000+ active SKUs, and our parts reach customers in over 30 countries across Southeast Asia, the Middle East, Africa, and the Americas.
What has not changed is our core principle: give customers the right part, at the right price, with complete honesty about what we have and how long it takes.
Hengjing by the Numbers
Two and a half decades of focus on one market has produced real, measurable results — for our business and for our customers.
Our Management System Certifications
Hengjing's supplier qualification process and in-house inspection protocols are aligned with international OEM standards. Our quality management system is certified to ISO 14001, ISO 45001, and IATF 16949 — and we hold authorized status as a Daewoo Bus Zhejiang Parts Center.
Our Trusted Partners
We maintain strategic, long-term partnerships with leading global aftermarket distributors, fleet management organizations, and heavy machinery operators.
We Supply Parts Worldwide
From Southeast Asia to the Middle East, from Africa to Latin America — Hengjing's parts reach operators and distributors across 30+ countries. Our export infrastructure includes multi-modal freight coordination, full customs documentation, and HS code classification support for every destination.
Ready to Source the Right Parts?
Send us your part numbers or equipment model. Our team will confirm availability and deliver a precise quotation within 48 hours — no obligation, expert review included.