In order to find out detailed description on each of sub-heding of HS, you can go to WCO web site: http://publications.wcoomd.org/index.php?language=en

We are presently doing a study on Light Fittings market (outdoor as well as indoor fittings). In this context, for the code 9405 under HS 2002 classification, I would like to know if lamps are included along with the other fittings (like ballast, bracket etc.) in the following product:           ...