Qualification honor
ChangchunQuality Management System Certification Certificate (English Version)
ChangchunQuality Management System Certification Certificate (Chinese Version)
ChangchunQuality Service Reputation Certificate
ChangchunCertificate of Integrity Management Demonstration Unit
ChangchunIntegrity Manager Honor Certificate
ChangchunIntegrity Entrepreneur Honor Certificate
ChangchunCertificate of Contract Abidance and Creditworthiness
ChangchunAAA Credit Rating Certificate
