In the quality controlling, Shenzhen G-powersupply Co., Ltd. has passed the ISO9001:2000 international quality management system. The company insists to have 7 quality checks for each product, such as and high pressure test, low pressure test and 100% aging test. QA spot test of finished products must be zero. Make sure that the reject ratio of each kind of products is below 3‰. Assure the quality of each product with an attitude of excellence.