Qinhuangdao Development Zone Qianjing Photoelectric Technology Co., Ltd., established in 1999, is a high-tech enterprise specializing in the research, production, and sales of elevator-related products such as elevator weight load control systems, elevator energy feedback devices, elevator IC intelligent management systems, elevator seismic monitors, elevator braking capability detectors, elevator remote monitoring management systems, smart "96333" elevator early warning and rescue vehicles, escalator disinfection devices, hundred-megabit fiber optic video systems, and elevator steel belt breakage monitoring devices. The company has obtained 37 patents, two national key new product plan projects, and participated in the drafting of three national product standards. It has also acquired multiple product and enterprise certifications including quality systems, environmental protection, and energy efficiency. The company provides supporting products for major elevator manufacturers such as Mitsubishi, Otis, and Schindler, and supplies electrical system products to hundreds of large sales enterprises. Its products have been used in key projects such as the Zhangjiajie Bailong Elevator, the Shenzhou V launch tower, the Ministry of Science and Technology of China, and the Chinese People's Liberation Army General Hospital. The market covers all major cities across the country, and products are exported to countries including the United States, France, Lebanon, Portugal, Indonesia, Singapore, Canada, Jordan, Malaysia, the United Arab Emirates, and Peru.