高手来帮忙翻译，汉译英，急！！?

for and in respect of the sales, the undersigned, after-sale service and project maintenance on our series products of exterior shading roller shutter window法律文书应该严谨一点: From 1st July 2010 to 30th June 2011.
Authorization Period.
Wuxi Jieyang Energy-saving Technologies Company Limited
Date, to act for and on behalf of our company with legally binding effect, hereby authorize Suzhou Dajin Technology Decoration Engineering Company Limited to be the true and lawful distributor of our products within the Suzhou region of Jiangsu Province from the date stated below!
Letter of Authorization
We. 
It is hereby authorized
 

Hereby authorized
Authorization period., Ltd, 2011
Energy-saving Technology Co, responsible for external window roller blind products in the region', service and project engineering and maintenance and so on, 2010 to June 30., Jiangsu Province authorized dealer, Ltd;s sales: July 1Power of Attorney
Hereby authorize the Suzhou Science and Technology Decoration Engineering Co. Daikin for my company in Suzhou
 

Certification  of authorization
Hereby authorized that Suzhou Dajin Science and Technology Decoration Engineering Co., Ltd. as our company's authorized dealers  in Suzhou, Jiangsu Province.It will take the responsiblity for external window roller blind products in the region's sales, service and project engineering and maintenance and so on.
Hereby authorized
Authorization period: July 1, 2010 to June 30, 2011
Energy-saving Technology Co., Ltd. Wuxi Jieyang