Shenzhen Casun Technologies Co.,Ltd focuses on the research&development, production and sales of power bank devices. Current products include power bank, bluetooth speaker and usb flash drive. Since foundation, our company has become one of the best mobile power bank producers in China, with strong and professional research team, strict management and quality control system and good after-sales service. Our company got ISO9001:2000 certificate.As professional custom power bank ,bluetooth speaker & usb flash drive manufacturer,we offer custom-made products,personalized logo imprinting,package design,data pre-loading service,as well as OEM and ODM service.We pursuit that the quality as company's soul and to be an expert in the line of power bank device;the company equips with the skilled workers,advanced production facilities and test system,taking these advantages,the clients could enjoy the quality products with competitive prices from us.Furthermore,the company dedicates itself in the product research and technology development t...