As a noob toy collector, I saw terms like PVC, Resin, Vinyl. So I Googled for the terms and here's a small list for other noobs like me
http://radiantdreamer.wordpress.com/...lystone-oh-my/
http://en.allexperts.com/q/Collectib...oys-vs-ABS.htm
However, it would be great if the expert toy collectors can share their actual experiences with the different 'chemicals' toys are made of here kay gamay baya ako grado chemistry.