Email:[email protected]

About Us



1. How long for production time?
It usually takes 15-30 days after receiving advance payment;

2. What about quality of your product?
We have strict internal quality control management. Test report could be provided upon request. Until now, our products and service have satisfied with our partners and been beneficial to better business. All our old customers 100% continue cooperation in the long term way.

3. What is SF Semi Trailer’s warranty policy?
Under a normal condition of use, we offer the following warranty policy:

meFrame6 MonthsRunning GearAxles6 Months
Suspension6 MonthsAxle Bearing3 Months
Kingpin1 YearWheel Hub3 Months
Balance Arm3 MonthsTires6 Months
Item NameWarrantyItem NameWarranty
Braking SystemBrake Drum3 MonthsSupport DeviceLanding Gear6 Months
Brake Chamber3 MonthsSpare Wheel Carrier6 Months
Air Reservoir6 Months
OthersItem NameWarranty
Leaf Spring3 Months
Brake Chamber Diaphragm3 Months
Emergency Relay Valve3 Months
Brake Shoe3 Months
Relay Valve3 Months

Excluded wearing parts

4. How to guarantee me to receive goods safely after pay?
We are formal factory certified and registered. Welcome to visit us and supervise production and loading.

5. Can I have sample before mass production?
Yes. You are welcome to buy any sample before production. MOQ is 1 unit.

6. Can I have wearing parts for maintenance?
Yes. We supply a full range of trailer parts including wearing parts that are suitable to any Ultraton Semi-Trailer.

7. How soon can I get reply from your company?
Usually, we will reply to your email within 1 day. If any urgency, please contact our 24-hour cell phone line at your service.

8. Can I get Sole Agency or Distribution of Ultraton brand?
Yes. We welcome any kind of cooperation including sole agency and distribution on the condition of our visit to your market and discussion.

9. Can you do OEM for us?
Yes. We can do OEM service.