If you want to choose a muffler that suits your vehicle, you must comprehensively consider the muffler's silencing performance (noise attenuation and spectrum characteristics), aerodynamic performance (pressure loss, etc.), and structural performance (size, price, lifespan, etc.).

Do you know the black color difference between exhaust tips?For many car enthusiasts who have just entered the tuning circle, appearance is often the factor that can stimulate their first desire to buy. A good appearance not only makes the car more attention, but also increases their tacit understan

Measured by time, ten years is like a drop in the ocean; Burned with events, it can make the road to brilliance.Established in 2023 year in Qingdao, China, GRWA Group is a high-tech enterprise specializing in the R&D, production, and sales of auto parts, which has always adhered to the entrepreneuri

March New Trade Festival, all products on sale!
Any needs, please contact us~~~

As the first brand of high-performance exhaust gas in China, GRWA is willing to carry out new cooperation with you in 2022, with high-quality service, guaranteed orders, stable supply, and reasonable price~~
More surprises are waiting for you to unlock!

（kindly notices, this is an annual review）
Hello, this is GRWA
If you want to know more about me, please click on the link and let our fate never end!
See you in 2022~~