Ceptics Brazil Travel Plug Adapter (Type N) - 3 Pack [Grounded & Universal] (GP-11C-3PK)

Will this convert the step down the voltage from 230/240V to 110/120V, so that products bought in US could be used in india?

Does this work for China? I will traver to China and need a Adapter for my computer.

Will it work for New Zealand from US laptops, cameras, go pro cameras, etc.?

would this work with any usa plugs and anywhere in ITALY? -- I read some of the reviews, that they didn't. Thank you.