Semi-Trailers · Trucks · Export
Your Fleet, Our Engineering
From flatbeds to tankers — 37 models built in China's trailer capital, shipped worldwide.
Trailers
Semi-Trailers Built for Your Market
Flatbed Semi Trailer
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Lowbed Semi Trailer
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RGN Trailer
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Step Deck Trailer
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Extendable Flatbed Trailer
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Container Chassis Trailer
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Fence Cargo Semi Trailer
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Curtain Side Trailer
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Dry Van Semi Trailer
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Why Sigma Trailer
Factory Direct,
Quality Guaranteed
Based in Liangshan — China's trailer capital — we manufacture 37 models of semi-trailers and trucks, shipping to 50+ countries across Africa, the Middle East, Southeast Asia, South America and Russia.
- Factory-direct pricing, no middlemen
- Full export documentation & RoRo shipping
- Multi-point quality inspection on every unit
Services
End-to-End Support
Custom Manufacturing
Every trailer is built to your specification — axle count, payload, dimensions and accessories tailored to your market's regulations.
Get a Quote →Export & Shipping
Complete export documentation, RoRo and container shipping arrangements, and customs clearance support for the destination country.
Contact →After-Sales Parts
Genuine spare parts for axles, brakes, suspension and hydraulics shipped directly to your workshop worldwide.
Contact →Blog
Latest Posts
Types of Semi Trailers: The Complete Buyer's Guide
There are more than a dozen distinct semi trailer types on the road, each engineered for a specific cargo profile, weight class and loading method. This guide breaks down flatbeds, lowboys, tankers, dry vans and specialized haulers so you can match the right chassis to your freight.
Read More →Semi Trailer Dimensions & Specifications Guide
Legal length, width, height and axle weight limits vary by country, and getting them wrong means fines or a rejected load at the scale. Here's the dimension reference we give every buyer before they sign a spec sheet.
Read More →Flatbed vs Lowboy vs Step Deck: Which to Choose
Three open-deck trailers, three different jobs — flatbeds move general freight, lowboys move oversized machinery, and step decks split the difference for tall-but-not-huge loads. Here's how to tell them apart before you buy the wrong one.
Read More →Ready to Build Your Fleet?
Get factory-direct pricing on 37 models of semi-trailers and trucks, shipped worldwide from Liangshan, China.