I have a desk chair I bought from Lazada - I need to repack and send back, where can I get packaging, please help! 

 

I'm in the Jomtian area, any advice will be appreciated! 

 

Cheers!!

Try these guys. They are a self-storage place but it seems they have boxes/packing material for sale as well.
https://www.pattayaselfstorage.co.th/

Their contact details (address/phone #/email) are at the bottom of that page.

Also, check with any of the places that have a Kerry Express sign or any of the Thai Post outlets (or go to the Post Office proper). I see on the Thai Post website they offer cardboard boxes (but don't detail the sizes or prices).

The little shops that "also" accept drop offs for Kerry probably won't have big boxes. If you can go to a main depot though (or tell a delivery guy what you need) they may be able to help.

Post offices sell packaging materials