Shenzhen Chitongda Electronic Co.,Ltd (Shenzhen Wolf-Guard Security Hi-tech Co.,Ltd) established in 1998, is one of the most powerful pioneer in the home security & protection industry of China. As a member of the Security and Protection Industry Association of China, Chitongda devotes its full energy into the research & development, producing & marketing of the home security & protection items, and has gained several patents in the field.