Hi Steve,
Not quite sure what you are asking here.
Maybe your command of English is impeding your direct questions.
From what I can make out, you are asking questions about product quality that cannot be answered until the final product is delivered.
Are you proposing to become a distributor of Einhell products?
If so, you should be asking these questions of your suppliers, and not posing these questions on a End User Forum!
I may have got the wrong end of the stick here, please elucidate.
kind regards
CB