A lab would be better-equipped to tell you the good brands of lab
equipment.   
    As far as composite resin, they are a class of acrylics--specifically
bis-GMA resin.  The resin itself has significant mechanical shortcomings
as a restorative material, such as polymerization shrinkage and wear.
These shortcomings are ameliorated too some extent by the addition of
fillers--usually quartz particles, somemtimes glass.  There are also
catalysts that promote polymerization, most of which now are
light-activated.
    If you google dental resin or bis-GMA composite resin, I'm sure you'll
get links to many proprietary websites.  Don't know how helpful they'll
be with particular specifics of the products.  But most of these vary
only by degree--for instance the percentage of filler in the mix and the
size and shape of the filler particles.

Steve