ChinaTrailers passed ISO9001 Quality Management System Certification in 2003. Through years’continuous efforts, main quality management system documents as below:

Management review procedure
Document control procedure
File management system
Record control procedure
Contract Control procedure
Design and development control procedure
Procurement control procedure
Subcontract control program
Material (parts) control procedure
Process control procedure
Production process control procedure
Welding control procedure
Heat treatment control procedure
NDT control procedure
Physical and chemical inspection control procedure
Inspection and testing control procedure
Inspection records and reports control system
Device control procedure
Inspection and test equipment control procedure
Nonconforming product (item) control procedure
Corrective and preventive measures to control procedure
Internal audit control procedure
Service Control procedure
Human resource control procedure
Perform special equipment licensing system
Quality Assurance Manual
Incoming inspection procedure
Process inspection specification
Fixed platform vehicles inspection operating instruction
Safety rules
Tooling, mold management
Process for Discipline Inspection