急求英语自我介绍

Glad to meet everyone ,here. i am here for the position of ###.
i graduated from ## with major in international trade.
i passed my CET4 and got my Documentation Specialist certificate.
i have experience working as clerk in china mobile and Bank insurance.

I was graduated from the International Trade.
I passed the English level four test and also have a "单证员（原谅我不知道这是什么...）" certificate.
I had worked as a travelling businessman and worked for a bank insurance company.

I was graduated from the International Trade. I have the College Entrance Test 4 certificate and the 单证员（这是什么啊？）certificate.In the last few month I had worked for China Mobile as a trade assistant and some bank insurance company.