Use DJ-VMPageBreak with VirtueMart 3 for J3.
It's the free PageBreak plugin for VirtueMart 3 for Joomla 3 that you can use on your site to divide a product description into clear info containers like for example "Global Info" "Technical data" etc.
The PageBreak plugin works in the simillar way to the standard Joomla pagebreak.
There are 2 view options to select from: tabs or accordion.