求翻译：参与建华管桩集团IPO审计项目，包括编制工作底稿，修改会计报告，4天完成50封银行询证函的信息收集、填写及寄出是什么意思？

Jianhua Pile Group in IPO audit projects, including preparation of working papers, modify accounting reports, four days to complete 50 Bank Letter of Inquiry to collect information, fill out and send

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Participation constructs the Chinese steel pipe driven in as piling group IPO audit project, including the establishment worksheet, revises the accounting report, 4 days complete 50 banks to inquire the card letter the collection of information, fill in and mail out

Pipe pile group participation China IPO audit projects, including the preparation of working papers, modify the accounting reports, 4-day 50 Bank confirmation letter of information gathering, fill in and send

Participation China IPO of pipe pile group audit project, including preparing working papers, modified accounting reports, 4 day 50 Bank confirmation letter information collection, complete and sent out