I am required to wirte an essay to explain my working experience within 500 words maximum as I am applying a business school for master degree in a univertisty, please kindly help me check following essay and give me some comments. Your help will be highly appreciated!
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Essay 1
My working experience
My first job was started in the year of 2002, on Jan. 22nd in ***

China Investment Company as an intern. After 6-month internship, I officially joined ***

as a formal employee. In December of the same year, I was promoted to be Administration officer within administration department, and then I worked in administration department for the next over 2 years till February 2004. My main responsibilities in administration department were office facilities purchasing, stationery purchasing, local vendor selecting through public bidding, invitation letter issue for German colleagues, flight ticket booking, hotel booking and travel agent selecting etc.
Based on my excellent working performance in administration department, 2 outstanding yearly appraisals which were conducted by HR team, our HR manager provided me a chance to be transferred to Sales department. Therefore, I happily accepted the offer and started working as Sales Operation Officer (***

import brand) since March 2004. The work in Sales department was really tough for me at the beginning because of the lack my knowledge about auto industry and sales operation management, but I believed I could control my work. After 2 months, I took over all my responsibilities in sales material update, ordering input system, contract issue, order tracking with factory in Germany, payment tracking (L/C or T/T payment), coordination with finance/marketing/after sales/logistics department, emergent problem solving and Auto show support etc... I have to say I learned so much from sales job especially the knowledge of how to run business efficiently and effectively in a company.
Unfortunately, I quit my job in ***

in November 2004 after I served 9 months in their sales team. The main reason of my resignation was for too much workload in my position under the background that ***

was running their import car business without a very clear sales procedure, sales channel and market orientation. They authorized too many import car dealers without very strict qualification before they clearly identify the target marketing share with their import brands. Despite the big Chinese auto market was dull by 2004; ***

import car business ran even worse.
In January 2005, I joined YY

Ltd., China as a secretary to Vice president in Communication Group. I had totally different job content and working atmosphere in YY

here which made me think about my career development and personal growth carefully. It’s not that easy to run such a big company as YY

Ltd. China, they have very strict working principles for everyone and use advanced system like SAP and budget control to supervise the procedure of internal accounting, personnel, purchasing, IT support and to allocate the work to all business units. People enjoy working here with the principles and they make profit meanwhile.
I deeply realized the importance of effective and appropriate internal structure and system build up within a company through my working experience both in ***

and YY

.
Name: Tong *** Ping
Applying for: Master in International Business
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thank you in advance!