Beijing best United Technology Co., Ltd., founded in 2004, is a R & D and sales company specializing in the overall construction of criminal investigation equipment, technical investigation and evidence collection equipment, technical investigation mobile phone analysis and evidence collection equipment, procuratorate technical investigation equipment, live ammunition shooting range automatic target reporting system and shooting range. Main products: Criminal investigation equipment, technical investigation equipment, technical investigation and evidence collection equipment, on-site investigation and evidence collection equipment, automatic target reporting equipment for shooting range, judicial appraisal institution equipment, procuratorate investigation and evidence collection and other products. Beijing best science and technology and material evidence identification center, Judicial Identification Research Institute, police and criminal college and other units jointly developed a number of industrial technical products, and successfully developed advanced criminal investigation equipment such as document detector, poison gas detector, comparison microscope and so on. Our criminal investigation products have a large number of users in China's judicial system, and various criminal investigation laboratories have been built in many units, such as national judicial appraisal institutions, professional vocational training schools, technical offices of law enforcement agencies, appraisal centers, judicial appraisal research institutes, etc. We have established forensic laboratories for many domestic forensic institutions, police colleges, political science and law schools, departments and law schools of various comprehensive universities. Military and police systems at home and abroad have built a large number of live fire range automatic target reporting systems and simulated image shooting training systems