we are company in china who has a long history in the auxiliary plant of generating boiler. It holds a range of product patents, and has been granted Shandong Star Corporation of China patent and High and New Technology Enterprise for many years in succession. Tianneng was the first company of its kind in China to get ISO9001, ISO14001 and OHSAS 18001 Certificates. The Company applies advanced production and testing equipment during manufacturing and quality control. It is a professional corporation designated by China National Electricity Corporation to produce slag-handling system, ash-handling system, coal feeding system, water treatment system and environmental protection equipment for 200MW-1000MW units of thermal power plants. It has researched Four Big Series and nearly 200 kinds of products for slag-handling system, ash-handling system, coal feeding system, water treatment system on the basis of introduction, digestion and assimilation of advanced technology from abroad and in the light of practical situations of Chinese power plants. Among them, the submerged scraper conveyor used for 300MW and 600MW thermal power generating units has been successively passed the technical expertise held by General Electric Power Planning and Engineering Institute of China National Electricity Corporation, The submerged scraper conveyor used for 600MW units has been classified as nation major new product in the year of 2003 by such 5 ministries and commissions as National Science and Technology Department and National Environment Protection Agency, etc.