Changzhou Minking Electronic Co., Ltd. is a professional manufacturer which specializes in the research, development and production of CCTV products.

Andrews International (AI) was founded in Los Angeles in 1988 in response to the growing demand among Hollywood studios for security forces with advanced skills and training. The security company operates offices throughout the United States, Canada, and Central America. AI security officers are protecting life and property at national landmarks, major tourist attractions, industrial sites, and educational and financial institutions.