求助翻譯：英文版實習證明

小弟學的專業是機械製造，現在國內一個汽車製造廠進行實習，學校方面要求出具英文版實習證明，但本人水平有限，恐格式，用詞不妥，特求高人幫忙！！
具體內容：
xx
（姓名，出生日期，出生地，）於xxx日期至xxx日期在我廠生產部和質量保證部分別進行了爲期4個周，總共八個周的.實習，期間請事假兩天。
簽字，蓋章
下面是我自己擬的一份，請高人指點，或者給規範格式。感激不盡！！


CERTIFICATE

TO WHOM IT MAY CONCERN: This is to certify that Mr XXX who was born in October 7th 1985 in Shandong province, China, has successfully completed and passedthe eight-week Program of internship in our company (Shandong XXXX Automobile Manufacture Co.,Ltd) during hisstudy formachine building at the following departments : Quality Assurance from December 31th 2008 to January 27th2009 Production from January 28th2009 to February 25th 2009 with 2 days off because of private business.
HR (Human Resources Department) Manager:____________