Well I have just spent the last 30 mins looking and I can only assume your country has some strange things going on.
I cannot find anywhere where it says the toys would require an import licence...
THis was at the end of one the (Thailand) government articles I read- perhaps it will help?
For further inquiry and information, you may contact the Customs Call Center at Tel. 1164 or the Customs Clinic at Tel. 02-667-7880-4, Fax. 02-667-7885, e-mail: customs_clinic@customs.go.th. Additional information may also be obtained from Customs ports of entry/exit