this group includes: 3x3 watts 3 watt

How would the previous sentence be correctly capitalized?
Answer: This group includes: 3x3 watts 3 watt
mb: it's a good thing you didn't go out with him, darling.

How would the previous sentence be correctly capitalized?
Answer: MB: It's a good thing you didn't go out with him, darling.
sewage is a convenient and suitable vehicle for the dissemination of resistant bacteria, in that it connects antibiotic selective environments, such as hospitals, chemical industries, farms and slaughterhouses to natural environments.

How would the previous sentence be correctly capitalized?
Answer: Sewage is a convenient and suitable vehicle for the dissemination of resistant bacteria, in that it connects antibiotic selective environments, such as hospitals, chemical industries, farms and slaughterhouses to natural environments.
this group includes: gu10 led lamp g series

How would the previous sentence be correctly capitalized?
Answer: This group includes: GU10 led lamp G SERIES