Talk:Light Chemical Tank/@comment-76.172.87.32-20120817164035/@comment-4632427-20120822042631

You get quite a few chem vials from quests from levels 41-45. I'm not sure if there's any way to "farm" them, though. I haven't seen any means of doing so as of level 44.

If you want to make your chem vials stretch further, upgrade your Barracks and Vehicle Factory to reduce the number needed when training troops/tanks. If you're highly proactive about upgrades, you should be able to build 2-3 of these on quest rewards alone.