The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

Now, what about PRODUCT on hand?
How's your inventory?
Breaking Bad Season 2, Episode 11

It's a new PRODUCT him
and I've been working up.
Breaking Bad Season 2, Episode 2

our PRODUCT
The Big Bang Theory Season 12, Episode 17

most chemically sound PRODUCT
on the market anywhere.
Breaking Bad Season 2, Episode 11

...and now it's our PRODUCT
they're selling.
Breaking Bad Season 3, Episode 12