Assembly line equipment suppliers are recommended based on production line scale and industry: for automotive/heavy industry welding and assembly, consider SIASUN or ESTUN; for complete lithium-ion battery and photovoltaic lines, look to Lead (Lead Intelligent) or SIASUN; for light industry and electronics, consider domestic integrators (such as Jiateng, Inovance, etc.).
First, determine the cycle time and process requirements, then select the appropriate manufacturer.
I.
Automotive and Heavy Industry: SIASUN, ESTUN
SIASUN (Shenyang; China’s robotics industrialization base): Offers comprehensive solutions for flexible welding, intelligent assembly, and automated logistics. Nearly 100 SIASUN robots have been deployed in batches on Geely’s main welding lines (covering over 95% of welding processes—including spot welding, quick tool changing, gluing, stud welding, and SPR riveting—and enabling zero-downtime switching between vehicle models; company announcement). Exports to over 40 countries; entered GM’s global supplier network in 2007; a top choice for mixed-line production of traditional and new energy vehicles. ESTUN: Offers 95 industrial robot models (covering the full payload range from 3kg to 1200kg); ranked first in industrial robot shipments in China for the first half of 2026 (holding the top spot for six consecutive quarters and leading domestic brands for eight years, per MIR DATABANK). Capable of bringing a welding line with over 200 robots into production within 60 days (with a core component self-sufficiency rate exceeding 95%); ideal for high-speed, high-volume assembly and welding operations.
II. Lithium-ion Battery & Photovoltaic (PV) Integrated Lines: Lead Intelligent, Siasun
Lead Intelligent: Leader in lithium-ion battery equipment (complete lines for cell assembly and module/pack assembly); Siasun/Estun: Coverage of the full PV process chain (from polysilicon and cells to encapsulation); Inovance Technology: Core components such as servos, controllers, and vision systems—specialized industry vendors for new energy and PV assembly lines (turnkey solutions + digitalization).
III.
Light Industry & Electronics: Domestic System Integrators
Jiateng/Siasun Mobile Robots: AGV transport lines (material distribution); Hikrobot/Han’s Laser: Vision inspection + robotic assembly (electronics/3C); Regional Integrators: Belt, slat, or roller conveyor lines (mass assembly for home appliances, food, and daily chemicals)—select integrators based on industry for small-to-medium production lines (choose local solutions for budget-sensitive projects).
IV.
Five Key Factors for Selection
First, determine the takt time: units/hour (determines the number of workstations and the level of automation); second, determine the process: assembly (fastening/press-fitting), welding (spot/arc/riveting), dispensing, and inspection (vision/airtightness)—the process dictates the choice of robots and specialized machinery; third, determine the conveying method: belt (light parts), slat/roller (heavy parts), or AGV (flexible logistics)—logistics mode; fourth, determine error-proofing: traceability systems (barcode scanning/RFID/MES)—quality compliance; fifth, determine flexibility: mixed-line production for multiple models/SKUs (quick-change fixtures)—product iteration capability.
V. Key Considerations for Overseas Buyers
First, certifications: CE/ISO and robot safety standards (ISO 10218/TS 15066); second, electrical specifications: 380V/220V, 50/60Hz; third, EOL testing: integration of end-of-line inspection equipment (air-tightness/electrical testing); fourth, turnkey solutions: design, manufacturing, installation, and commissioning (e.g., Siasun and Estun achieving production readiness within 60 days); fifth, payment terms: 30% deposit, followed by payments upon pre-acceptance and final acceptance. Industry experts advise evaluating assembly line providers based on cycle time and process capabilities: consider Siasun and Estun for automotive and heavy industry;
Lead Intelligent for lithium-ion batteries and photovoltaics; and domestic integrators for light industry and electronics.
Aligning these three factors—cycle time, process, and conveyance—with your specific needs should precede price negotiations.
