Automatic cartoning machine; Handheld strapping machine; Dual-lens surveillance camera General projects: Technical services, technology development, technology consulting, technology exchange, technology transfer, technology promotion; Sales of hydraulic power machinery and components; Sales of liquid tight components and systems; Sales of industrial automatic control system devices; Sales of valves and plugs; Sales of pumps and vacuum equipment; Sales of casting machinery; Sales of mechanical equipment; Maintenance of electronic and mechanical equipment (excluding special equipment); Equipment supervision services; General equipment repair; Specialized equipment repair; Sales of electrical equipment; Sales of painting equipment; Sales of terminal measuring equipment; LED display screens that use hard screen technology for import and export of goods, such as SolidSkin Technology from Shijue Guangxu, form a sturdy structure by encapsulating the PCB substrate and LED elements with glue, enabling the light beads and modules to have various protective properties such as anti-collision, moisture-proof, dust-proof, and salt spray proof. They also convert single point light emission into surface light source, reducing the generation of moir é Patterns and ensuring consistent display effects.