Holion Electronic Engineering Co. Ltd, Zhuhai was established in 1997, Holion is a professional intelligent hotel room control system manufacturer, which has great ability in system design, development, production. We continuously bring international advanced technology into our design and production, till now we have launched LION,INTELLI, HOLY and INTER 4 Series Intelligent guestroom concentrated control system: LION has 280,290,320(Network), and Intelligent guestroom modern control system: 285,295,325(Network), INTELLI has 330(network), and 360(network), HOLY has 638 and 688(network), as well INTER has 460(network). Besides time to time controlling the lights, Air Condition, Stereo and TV, All those system improve the energy saving, security, and more efficient service, invest the green environment protect concept into those system, and try the help hotels to reach this goal.Holion is a very profession and advance company in Intelligent guestroom control system industry, she has 10 years history and she focuses all she has on this industry. She is one of the first companies developed HOLY Intelligent guestroom telephone control system: 638,688(network), the only company has 3 kinds of bus modes: RS485, CANBUS, TCP/IP in China,and also the only one which have launched the “Express Train”function in our products recently. Holion is certified By ISO9001, she is the member of Hotel & Restaurant Supplier Committee, Energy Saving Committee, and China Tourist Hotels Association,the products are being proved by national authentication department.