--Customer confirmed drawing and data details provided by engineer
--Forward the drawing to the production department
--Each parts produced according to the drawing, like steel plat cutting, laser cutting, plasma cutting, CNC bending
--Welding processing like main beam, side beams, kingpin, bottom floor
--Derusting, sand blasting, prime coat spraying, finishing coat spraying, drying processing
--Parting installing like Axle, tires, lights,
--Wax spraying
--package and delivery