***** Beijing Tongyuehuifeng Technology & Trade Limited Company is the most professional portable medicine cold box suppliers and the technology leaders in this line. The registered trademark is"Joyikey". Joyikey is the technology leader in this line, insisted on of his road of professional development. Since its established in 1997, it has undergone from weak to strong step by step, from the process of development, it has become the most professional enterprises of research and development portable storage cold box. The advanced production equipment, professional and technical team and improved after sale service system is a security for our customer. The company which is located in Dongguan with a modern factory buildings and advanced production equipment, can product 60 million sets annually, and the planning of 110 million sets. Our company has past ISO9001 certification, the product is conform to 3C and other main international certification, like GS, CE, CB, ETL and S MARK. We mainly export to Europe, Australia and North America, Japan and other developed countries and regions, The quality and design of the products received the admiration and love among our customers. The product is with craft skills, stability characteristics and a perfect management, quality control and after sale service system .It has absolute technology and services advantages in this line. In accordance with honest, aggressive, realistic and innovative principle, we have been adhering to the high quality, high levels of management to meet multilayer market demands. We insist on the combining of proprietary brand and trademark-specified production, independence R&D and client design combining to become the foremost, the most professional producer of portable box in China.