... manufacture Semi trailer double air brake chamber 1. Trailer & Truck Parts Manufacturer2. 4 Production Lines 3. OEM Quality 4. ... Casts, Steel Casts, Forged Parts, and others. We manufacture Quality Truck & Trailer Axle Parts, Suspension Parts, Fifth Wheels, King Pins, ... Landing Gears, Air Brake Chambers, Slack Adjusters, Twist Locks, Brake Kits, and other related products. A complete set of ...