Thank you for your purchase of our Buick (别克) car at Shanghai GM (上海通用汽车) . We try our best to provide you with world-class service. To better ensure your rights please complete and return the Owner Information Form to Shanghai GM Marketing Department within 30 days from the date of the car delivery (交付) . You will receive our Buick Owner newsletter with the latest information on our product aftersales service car care etc ...