高人入黎改grammar- 10分

I'll rewrite your passage, with corrections placed in brackets or captial letters.

For those THAT (hospital=non-human) have engineers working in the companies, ONLY A SMALL AMOUNT OF PARTS ARE ORDERED (passive more appropriate), since their enginners know how to repair? (ASSEMBLE is a better word) the machineS. But for those smallER companies THAT DOESN'T HAVE engineers, (do NOT use THEN after FOR THOSE) they woud order a full kit (OF if the kit is the building material, FOR if the kit is the tools required to build the machines) a particular section. When the meeting is over, I begin working on e-mail inquiries, and most of them are QUOTATION REQUESTS FOR the part.

Hope it helps!

those係話緊果幾個engineers 所以用who, 仲有who可以解"佢"

got/had any 我接受到

"for" a particular section.

"quotation requests" "for" the parts