Hi,
The simple case would be to use the vendor description with the "loadmodule" and "loadposition" tags.
It is also possible to use an extension like "module anywhere" or "advanced module manager" to have more setting on how/where display modules.
Otherwise, it is still possible to perform some modifications in the vendor page view (using view override) in order to add custom code to display modules. You could use vendor custom field to know which module display, etc. But it will require some development skills.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.