Web form message box to auto-populate with product SKU and Name

We have the below form (link) iframed in on certain product pages on our website and would like the message field to auto-populate after the page has loaded with the product SKU and Machine Name, both can be found on the product page.

Form Link : https://analytics-eu.clickdimensions.com/charterhouseorguk-agppq/pages/yrlypw2bee24pganoodfdq.html?f_4e3b50f414cfe911a812000d3a86d7a3=Sku%20Machine%20Name

Form can be found under the "Enquire" tab on this page: https://www.xpres.co.uk/roland-versastudio-bn-20a-desktop-printer-cutter