Hi there, If you read our company introduction as below, we would be grateful. We are shenzhen billion grand tech Co., Ltd.who is mainly specialized in selling and researching fiber optical equipments ,mobile phone refurbished machine and Solar cells and panel. In this fiercely competitive industry,our serious and responsible attitude to provide customers with quality products, reasonable prices, professional services, has won the customers&＃39; recognition. We will work harder to grow together with our customers.The recognition of our customers is the driving force for our future progress. Regards from All BG tech!!!