R&D, production and sales: police reconnaissance equipment, safety protection products, rescue equipment, training equipment, transportation facilities, security equipment, fire-fighting equipment, digital products, lighting products, hardware products, chemical products (excluding hazardous chemicals, monitoring chemicals and precursor chemicals), outdoor products, automobiles, motorcycles, communication equipment, electronic products, second-class medical equipment, criminal investigation equipment, photographic equipment, DNA testing equipment, DNA testing reagents , DNA consumables, laboratory equipment, furniture; laboratory decoration engineering design and construction; computer software and hardware development, weak current engineering design and construction; information system integration services, Internet of Things technical services, DNA testing technical services; self-operated and agent import and export of various commodities and technologies (except for commodities and technologies involving pre-licensing, state-limited company operation, or prohibited import and export); software development, information system integration services, and information technology consulting services.