to come and see their static aircraft at EBACE.
There you have answered your own question.
Buy, beg or borrow a pass to the EBACE this year. Then go the the booths of every company that make cabin/galley equiptment and ask how their products work and interface with the aircraft.
Now trust me on this, if you do this, you will be bored to tears by all the information they will happily give you and recieve an excellent education on the subjects that you desire more information.
And go to the parties, great fun.