1.Brief Introduction Guangxi Dikai Sci & Tech Co., Ltd. (be called for short as DK Company) was established in June 1989. It has been specialized in producing lightning protective products, researching development of lightning protective technology, consulting lightning protection service, and engineering lightning protection cases for over 30 years. DK Company locates in Nanning High-tech Development District and enjoys advanced manufacture techniques as well as convenient transportation. The company now has a top-ranking lightning protection test center, a lightning proving ground, an intellectualized building for scientific research. Products of the company have won more than 10 national patents and possess ISO 9001:2000 certificate and CE certificate. DK Series SPD passed national authority organization test held by Beijing Lightning Prevention Device Testing Centre and National Railway Department Product Quality Testing Centre. During the last 30 years, DK Company has accomplished over 100 thousand cases of lightning protection for customers. 2. DK Company Founder Mr. Wang Dongsheng Position: DK Company Owner and General Manager Other Professions: Committee Member of the Thunder and Lightning Standardization Administration of China Member of the Standing Committee of Chinese Meteorological Society Professor of the Chengdu University of Information Technology Committee Member of the Security and Protection Standardization Administration of China 3. Publication DK Company is one of the editors of the document named SMS Lightning Protective Technical Requirements, which is Public Safety Standard of China. 4. Production Line There are 6 major series and 160 varieties of products, including: Power Surge Protective Device (SPD) Series; Signal Surge Protective Device Series; Combined Surge Protective Device Series; Antenna Feeder Surge Protective Device Series; Earthing and Grounding Series; Lightning Arrestors Series; 5. R&D DK Company established a lightning protection lab in 2000, and it has a 150kA surge current generator and a 1200kV surge voltage generator. DK also have lightning product researching ability, data signal processing and lightning waveform transfer processing abilities. The lab has upgraded into a national lab at present, and we make lots of test experiment for the Government or other companies, such as Steel Window of High-rise Building Lightning Strike Test Experiment for the Ministry of Construction of China. Test items: a. 150kA surge current b. 1200kV surge voltage c. SPD through flow and residual voltage research d. SPD response time (1ns) research e. SPD operational voltage and drain current research f. Signal transmission characteristic (attenuation, standing-wave ratio) research g. Grounding method research h. Lightning arrester research i. Some special researches required by clients j. Variety test experiments required by regulations 6. Design &Project DK Company has been granted under authority with superlative class attestation in Professional Lightning Protective Engineering and Design. 7. Quality Certificate a. ISO International Quality System Certificate b. CE Safety Certificate 8. Clients DK Company's products and service have been widely used for Telecom, Electric Power Company, Transportation, Security and Safety protection, Airline Company, Banking and Financial System, Education, Broadcasting, Military, and Industry fields.