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This download is suspicious

The software is distributed free of charge. The "suspicious" status usually means that the installer includes optional adware components that you don't have to install. The contents of the download are original and were not modified in any way. The software is periodically scanned by our antivirus system. We also encourage you to check the files with your own antivirus before launching the installation. The version of QSTEM you are about to download is 2.30.

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