HGB Battery Co.,Ltd. places great importance on raw materials used in the manufacturing of quadcopter battery-ultra thin battery. Each batch of raw materials is selected by our experienced team. When raw materials arrive at our factory, we take good care of processing them. We totally eliminate defective materials from our inspections.. We receive important feedback on how our existing customers' experience HGB brand by conducting customer surveys through regular evaluation. The survey aims to give us information on how customers value the performance of our brand. The survey is distributed biannually, and the result is compared with earlier results to identify positive or negative trends of the brand.. At HGB Battery , we offer expertise combined with personalized, one-on-one technical support. Our responsive engineers are readily accessible for all of our customers, large and small. We also provide a wide array of complimentary technical services for our customers, such as product testing or installation..