Question: The featured China GuangDong 1x1 watts G SERIES manufacturers and listed here are sourced by the karnar lighting
Please fix the punctuation.
Fixed: [The featured China GuangDong 1x1 watts G SERIES manufacturers and listed here are sourced by the karnar lighting.]

Question: Ask your tile contractor how long is the warranty
Please fix the punctuation.
Fixed: [Ask your tile contractor how long is the warranty?]

Question: Many Art Nouveau attractions such as Belvedere Palace with works by Gustav Klimt the Stadtpark designed by Otto Wagner and the Secession building are within a short walk of the Konzerthaus Hotel
Please fix the punctuation.
Fixed: [Many Art Nouveau attractions, such as Belvedere Palace with works by Gustav Klimt, the Stadtpark designed by Otto Wagner, and the Secession building are within a short walk of the Konzerthaus Hotel.]

Question: 4 Hardened connection between the rear wall frame and the floor plate
Please fix the punctuation.
Fixed:
[4. Hardened connection between the rear wall frame and the floor plate]