could you help me with any of these 3 questions?

Hi again,

I have 3 questions to ask. The materials below were translated by me and they should be perfectly "clean", as they are due to be included on a CD.



1. "Manufacturing, trading, assembling, putting into operation and providing technical assistance for equipment, assemblies, plant, technological lines, for internal and external beneficiaries"

I am quite annoyed about the repetition of the preposition "for". Any better suggestions?



2. "Conventional and non-conventional technologies for metal processing, surface preparation (including through painting), dismountable and non-dismountable assembling (welding-riveting)"

a). "surface preparation through painting" (i.e. to prepare a metal surface by painting it) – does it sound right? Or should I change it with "surface preparing through painting"?

b). " dismountable and non-dismountable assembling":

dismountable= smth which can be disassembled – is it the best term? And is "dismountable assembling" correct in the context (to assemble more pieces so that they can be eventually disassembled)?



3."stationary exhibition" (an exhibition which is not "moving" or "touring", but stays in one place)- -is it right?



I would appreciate if you could help me with any of these.