Question: Hi my name is AngelVIP and I am 19 years
Please fix the punctuation.
Fixed: [Hi, my name is AngelVIP and I am 19 years.]

Question: The total production capacity of the four paper mills in the Group is around 800000 tonnes per year
Please fix the punctuation.
Fixed: [The total production capacity of the four paper mills in the Group is around 800,000 tonnes per year.]

Question: With the above in mind especially as Ubuntu has made btrfs available as an installtime option I figured it would be a good time to dive into btrfs and explore a little
Please fix the punctuation.
Fixed: [With the above in mind, especially as Ubuntu has made btrfs available as an install-time option, I figured it would be a good time to dive into btrfs and explore a little.]

Question: See diagrams A1 and A2 Diagram A1 shows how round beg and ends A2 is repeated 4 times in total on round NOTE Last round is explained in pattern First round shows entire circle
Please fix the punctuation.
Fixed:
[See diagrams A.1 and A.2. Diagram A.1 shows how round beg and ends. A.2 is repeated 4 times in total on round - NOTE: Last round is explained in pattern First round shows entire circle.]