To extract the contents, you generally need all subsequent parts (e.g., .002 , .003 ) in the same folder.
Because "chsasan" is not a common technical term, it is likely a name chosen by the creator of the archive. Common reasons for such naming conventions include: chsasan.7z.001
Programs like 7-Zip or WinZip can reconstruct the original data by right-clicking the .001 file and selecting "Extract". Possible Origins of "chsasan" To extract the contents, you generally need all