Packaging
The most common distribution method in today's Asian countries is the pre-packaged format. The bags are usually sealed airtight to keep the squid chewy and tough. Depending on the company doing the packaging or preparation, each brand usually have their own ratio of MSG added on top.
Unpackaged versions are much more rare as they have traditionally been available in select specialty shops, usually sold next to beef jerky.
Read more about this topic: Dried Shredded Squid