Hi Chendong, only the latest version of the toolkit is available for free downloads. In case you want access to the older version of the suites and toolkits, we would suggest you to purchase a license.
For any query regarding the purchase of a license, please contact your nearest re-seller/distributor. They would support you throughout the purchase process.
To contact your nearest re-seller/distributor, please click here: https://software.intel.com/content/www/us/en/develop/tools/resellers.html, and scroll down to select your country from the drop down menu. You will be presented with their contact information.
Chendong, unfortunately we were unable to hear back from you.
If you have any further queries, please post a new question as this thread will no longer be monitored by Intel®.