哪位英语高手帮我改一下.

hello everyone.

I’m very glad to introduce myself to you here.
I am Wang Qiang from Xi'an of China.

I had been here three times for the D-Fas System Last year.But all is short-term.This time I will stay here for 3 years to maintenance D-Fas System and to do the relevant jobs of G-Fas.
I feel happy that I have the opportunity to work with all of you ,and to provide service and support for you with Mr. Tong.

As you know,D-Fas is a big and complex computer system.At present,I am not very familiar with it,so during the First period I will study D-Fas and assist Mr. Tong in maintenancing D-Fas．My first aim is to do this job independently in one year．

Besides，Everything here is strange and challenging for me. but I am full of passion. I wish to adapt myself to the new circumstances and the new position as soon as possible,so that I can independently work for you as soon as possible.

Of course, I need to learn from all of

Good.

I am pleased to introduce themselves here.
I come from China's Xi'an.

I would like to have three days to the D - Fas system last year year.but all short-term term.this time, I will stay here three years in the maintenance of the D - Fas system and do the work, grams - in the Fas.
I think glad that I have the opportunity to work with all of you and provide services and support for you and Mr. Tang.

As you know, for D - in the Fas is a large and complex computer system.at now, I am not very familiar with, so in the first period, I will look into the D - Fas and assistance to Mr. Tang in the maintenancing D - fas . my first aim is to do this work is an independent operation of 2001.

In addition, here are all challenging. But I is full of passion. I would like to adapt to their new circumstances and new position, as soon as possible, so that I can work independently, to contact you as soon as possible.