I am the junior

I’m very happy to find this website from “douban”，so that I can find some friends to practisce with me. I want to improve my oral english for my job and as exchange, I can teach you chinese, guangzhou language or japanese if you like. I just work 3 days in the company, and I bring my products to Ronggui today. I'm happy that I  to have something to do now...hahaha~~

what Catalin said +

as in exchange

I just work 3 days in the company (needs rephrasing, do you work 3 days a week? have you been working for 3 days? OK given that you're "the junior" I assumed that you've been working for 3 days but still I'm a junior too but I've been working for a few months)

and I bring my products to Ronggui today. (ok what's Ronggui? xD  if it's this place: http://en.wikipedia.org/wiki/Ronggui_Subdistrict then you could have introduced where you work a little bit too)

I'm happy that I (this is OK)