BMW M4 rear with performance exhaust and blue flame

Exhaust Manufacturer · Ganzhou, China

Performance Exhaust,
Built In-House

Cat-back, valvetronic and titanium systems for BMW, Porsche, Lamborghini and Ferrari — cut, bent, welded and inspected under one roof.

  • 18Years on exhaust
  • 100+Export countries
  • OEM / ODMPrivate label
Worker cutting a stainless steel exhaust tube in the Dongmao workshop
18+Years

OEM / ODM

Dongmao.
Our workshop.

Private label, custom specifications, laser-engraved branding and low-MOQ trial orders — built on our own line, packed to your artwork.

Robotic TIG welding of stainless steel exhaust sections

Cat-Back · Valvetronic · Titanium

Welded to
your platform.

Dongmao builds stainless and titanium exhaust systems for BMW, Porsche, Audi and Ferrari — jig-built, TIG welded and test-fitted before a single unit leaves the workshop.

Craftsman grinding and polishing a stainless steel muffler

Tips · Mufflers · Front Pipes

Finished by hand.
Every unit.

Mufflers, tips and complete systems are ground, blended and polished before packing — the same finish on a sample order and on a full container of Dongmao exhaust.

EN

ABOUT DONGMAO EXHAUST

Ganzhou Dongmao Auto Accessories Co., Ltd. is based in Ganzhou, Jiangxi, China, with eighteen years in the automotive supplies industry and an experienced in-house team across development, manufacturing and export. We specialize in auto parts — exhaust systems above all — and run production, quality control and foreign trade ourselves. For overseas buyers, that means consistent cost performance, flexible cooperation and full OEM/ODM support.

WHY CHOOSE US

18+ YEARS IN EXHAUST

  • We answer sales and technical questions within one business day, seven days a week.
  • Custom specifications, packaging and laser-engraved branding.
  • Export packing and container loading planned around your delivery schedule.
  • Eighteen years on exhaust only — no sidelines, no compromised specs.
Dongmao Exhaust team in front of the Ganzhou factory
Finished exhaust systems packed in cartons at the Dongmao warehouse

INSPECTED UNIT BY UNIT

  • Every system is leak-tested, sound-checked and test-fitted on a vehicle-specific jig.
  • Weld inspection on every joint: penetration, bead consistency and back-purge.
  • Photo report of the finished shipment sent before the container leaves.

WARRANTY

  • 12 months replacement on manufacturing defects.
  • 18 months structural cover on welds and flanges.
  • Claims settled from photo or video evidence — no return freight on low-value parts.
Valvetronic exhaust system displayed in the Dongmao showroom
World map with pins marking Dongmao export markets

SHIPPING TO 100+ COUNTRIES

  • Distributors across North America, the Middle East, Western Europe and Northern Europe.
  • Container programs, mixed-SKU consolidation, FOB and CIF terms.
  • Fitment data, installation notes and product images supplied in English.

OUR FACTORY

Tube stock in, packed systems out — four stages we control in-house, on our own floor in Ganzhou.

Grade 304 stainless steel tube stock stacked on racks in the Dongmao warehouse
01

RAW MATERIAL

Grade 304 stainless tube stock, batched and tagged before it reaches the shop floor.

Worker cutting a stainless exhaust tube with an angle grinder
02

CUTTING & FITTING

Tubes cut to length and trial-fitted by hand before welding — not trimmed to fit after.

Finished mufflers and resonators wrapped and stacked in the factory
03

MUFFLER ASSEMBLY

Mufflers and resonators built, baffled and wrapped, stacked ready for assembly.

Completed cat-back exhaust systems laid out on the factory floor before inspection
04

FINISHED SYSTEMS

Completed cat-back systems laid out for final inspection before packing and container loading.

More from the workshop

Pipe bending machine shaping a stainless exhaust tube
Punch press forming stainless exhaust bends
Worker assembling a stainless cat-back system on the workshop floor
Bench grinder finishing a welded exhaust joint
Wrapping and edging a muffler before assembly
Endoscope inspection of a finished weld inside the pipe
Packing finished exhaust systems into export cartons
Finished stainless elbows and bends in storage crates

TRADE SHOWS

We take the full line-up on the road — buyers handle the product, compare the finish and hear the system before they commit to a container.

Dongmao exhaust booth with mufflers and tips on display

Product wall and buyer briefing

Tips, mufflers and cat-back systems laid out on the stand.

Sales staff explaining an exhaust system to a visitor at the booth

Full range under one roof

Stainless, black-coated and titanium finishes side by side.

Product walkthrough with an overseas buyer at the exhibition

Live product walkthrough

Sectioned mufflers and valve units explained in person.

RECENT BLOG POST

Grow Your Exhaust Business Now

Send your vehicle list and target price. You get fitment confirmation and a quotation within 12 hours.

  • Free sample and quotation within 12 hours
  • Private label, packaging and logo work
  • Cat-back · Valvetronic · Titanium · Downpipe

18028902825@163.com