On 18^th October, 2017, the customers from Hainan for quality evaluation, purchase came to visit us. They evaluated and investigated on the spot for the company's production management, quality control and other aspects, the evaluation personnel also visited the production workshop, test center and warehouse and made a detailed examination of the production, inspection and test records. Through the investigation, communication and on-site evaluation, customers have increased a lot of confidence in our products and quality system, for the future more in-depth cooperation, lay a solid foundation for future cooperation.