HOME > Service Guide > Search by Service Departments > Management Department for Processing Trade Approval for alternation and prolongation of processing trade contract Functions 1.Approval for alternation and prolongation of processing trade contract 2.Responsible department: Management Department for Processing Trade 3.Tel:2398235 Documents Required for Submission 1.Application report on the alternation and prolongation of the processing trade contract（with official approval of the local foreign trade and economic cooperation department for county and district enterprises； 2.original Approval Certificate for Processing Trade Contract and alternation of contract(original) 3.Application form for alternation of processing trade business 4.Imported and exported materials record list 5.the customs registration manual 6.certificate provided by the foreign investor Procedures of Examination and Approval Accepting→Examination→Issue certificate Processing Time Limit Immediately Supervision System The bureau has set up supervision and complaint systems. Anyone who dissatisfies with service provided or finds out violation of laws, regulations done by office workers can complain to the supervising departments on the complaint hotline:2398433 or the Chaozhou Institution Efficiency supervision Center on 2287111.