Tiandi Science & Technology Co., Ltd. is a company which is mainly sponsored by China Coal Research Institute, combining with Yanzhou Coal Group Co., Ltd., Qinghua Ziguang Inc. Co., Guangzhou Energy Research Institute of China Academy of Sciences and Datun Coal and Electricity Co., Ltd.. It was authorized by National Economy and Trade Committee and registered in National Industrial and Commercial Administration Bureau.The company shares came into the market on May 15th, 2002 at Shanghai Stock Exchange. The business scope of Tiandi Science & Technology Co., Ltd. are the product and sale of electricity product, environmental protection equipments, mine electricity products; the design and contract of underground project, coal cleaned and chosen project, coal comprehensive usage project, environmental protection project and net work project, mine construction and the design of production system, technology promotion, consultation, contract and service of external project. Tiandi Science & Technology Co. Ltd. has 14 patents, 127 special technologies, all of the core technology and core products have their own intellegent property rights. The company has already achieved authentication National Science Ministry and China Academy of Sciences organized about high technology in March, 2000, also got ISO9001quality system authentication in 2001. The company developed enterprises civilization system with the core "innovation", took the coal industry modernized as its task, provided services with high technology, high quality, high efficiency to the clients of domestic and abroad.