The release of about 6000 pages provided a good opportunity for business, industry and sectors to understand the detail of the agreement, he said.
''This will now clear up any of the suspicions and potential misinformation floating around as the facts are there for all to read.''
The release of the documents would provide a platform for understanding an engagement throughout the business sectors and provide the opportunity for robust discussions about the merits and limitations, Mr McGowan said.
''The chamber will now look to actively engage with all sectors to help them understand and work through the agreement.''
It's our Future coalition spokesman Barry Coates said the release of the documents by Trade Minister Tim Groser was a ''shameful reminder'' of the secrecy, spin and corporate deal-making that had characterised the deal.
After six years of secrecy, the Government was still refusing to release the analysis and background documents.
''The TPP devil will be in the detail, especially since large corporations and their legal experts have been given privileged access throughout the negotiations. It is time to show the public what's really in the TPP - instead of the spin.''
The TPP was unlikely to be signed by governments until February next year, at the earliest, Mr Coates said.
The coalition aimed to build a massive public outcry to stop the agreement from being signed.
Another day of action against the trade deal was planned for November 14.
ExportNZ executive director Catherine Beard said the TPP risks were being overstated.
The investor-state dispute settlement provisions were sensible protection for the parties involved by allowing arbitration if investors were unfairly discriminated against by a government and suffered damage as a consequence.
The TPP text indicated the large scale of the benefits New Zealand would receive, she said.
''An initial reading reveals New Zealand will profit significantly from the cutting of extremely high tariffs currently imposed on many of our exports.''
