MY new job

Specifically, our company is a the supplier, we can supply security products, such as access control systems, all kinds of locks, cabinet locks, car parking management systems, automatic barrier gates, parking cabinet boxes, card readers, card issuers, fingerprint readers, finger vein scanners, attendance machines,  etc. We are looking for buyers.
I'm a saleswoman, and my job is to sell our company's products to people in diffierent countries. This is what I do, and this is what I need to do.

Very good job, just remember that we always capitalize the pronoun "I," and every item in your list of things you sell is countable, and they should all be in the plural form. Other than that, excellent job!