Engineered to maximize warehouse throughput, enhance material handling efficiency, and reduce overhead costs.
Established in 2015, Shenzhen Sunli Intelligent Logistics Equipment Co., Ltd. has developed into a premier global designer, manufacturer, and exporter of heavy-duty industrial racking and high-density smart warehouse storage solutions. Operating out of our state-of-the-art production facility spanning over 38,000 m², we integrate structural engineering, robotic manufacturing, and intelligent warehouse control software (WCS) under one roof.
Through our 12 years of core industry experience and 8 years of international trade and supply chain expertise, we bridge the gap between heavy structural storage and cutting-edge industrial automation. Driven by rigorous technical validation, our team has become a trusted partner for global 3PL networks, e-commerce giants, and cold chain operators.
"We do not just construct steel racks; we design active spatial efficiency. Every millimeter of profile steel we roll is engineered for structural resilience and operational optimization."
Our dynamic team of 35 dedicated QC professionals executes a complete testing framework including raw material load-bearing testing, non-destructive weld-seam inspections, and precise anti-corrosion powder-coating thickness validation.
Our engineering division includes 28 skilled R&D engineers who design structural solutions to withstand seismic hazards, wind loading, and dynamic stresses, introducing over 120 new products and structural improvements annually.
Understanding the paradigm shift in automated storage and retrieval technology (AS/RS).
Standard automated storage systems have historically relied on stacker cranes or 2-way radio shuttles. While effective, these systems present structural bottlenecks when managing high SKU complexity and variable throughput. The integration of 4-way intelligent shuttle systems has revolutionized dense warehousing.
Unlike 2-way shuttles which are constrained to linear paths, the 4-way shuttle transitions between longitudinal and transverse rails autonomously. This allows the shuttle to access any storage location on a specific tier without the intervention of AGV forklifts or manual transfer units.
By eliminating heavy machinery aisles and structural spacing required for traditional forklifts, a 4-way shuttle AS/RS system achieves up to 90% floor-space utilization and up to 350% higher volumetric efficiency compared to standard pallet racking systems.
If a single crane fails in a stacker-crane system, the entire aisle is blocked. In a 4-way shuttle matrix, multiple shuttles operate dynamically across levels. If one shuttle requires maintenance, the fleet management software routes neighboring shuttles to balance the workload, ensuring zero downtime.
How Shenzhen Sunli is building the next generation of smart intralogistics machinery.
Integrating AI routing to minimize travel time and prevent path conflicts in high-throughput multi-shuttle environments. Real-time path calculations reduce cycle times by up to 22%.
Transitioning shuttle fleets to hybrid power systems. Charging cycles are reduced to under 15 seconds for a 5-minute operational burst, while recuperative braking captures and stores energy.
Developing specialized materials, low-temperature lubricants, and condensation-proof electronic components to support fully automated operations in sub-zero environments.
Developing direct machine-to-machine communication protocols between 4-way shuttles, vertical lifters, and laser-guided AGVs to achieve fully synchronous, uninterrupted material flows.
A step-by-step look at our 38,000 m² factory's specialized cold-rolling, cutting, and coating infrastructure.
Tailored configurations to meet complex storage requirements in diverse climates and regional structures.
Operating high-density cold-storage structures requires materials that resist low-temperature embrittlement. Sunli structures utilize certified high-grade structural steels coupled with specialized powder coatings that prevent micro-fracturing at sub-zero levels. When integrated with 4-way shuttles, cold storage facilities save up to 40% in refrigeration-related energy costs by compressing the volume of cooled air space.
Fulfillment operations require high selectivity and dynamic handling for diverse SKU ranges. By utilizing our 4-way shuttles with smart WCS software, dynamic slots adjust in real-time. Shuttles automatically consolidate fast-moving inventory near vertical lifters during peak outbound windows, maximizing throughput speeds.
Building tall structural racks in seismic areas requires high physical ductility. Sunli engineers use finite element analysis (FEA) to simulate dynamic loads. Upright profiles and baseplates are engineered with customized anchor points, heavy-duty brace patterns, and high-tensile fasteners to absorb seismic energy without structural collapse.
Automotive manufacturing demands extreme heavy-duty performance. Sunli steel pallets and racking configurations handle up to 1500kg per storage cell. High fatigue-strength rolling processes ensure shelves resist deflection over decades of load cycles, supporting both heavy components and smaller automated cases.
Why China's advanced manufacturing ecosystem ensures superior stability, quality, and cost efficiency.
We secure structural steel coils directly from major steel conglomerates. Access to certified, high-grade Q235B and Q355B carbon steel ensures consistent grain structure, yield strength, and exceptional mechanical ductility across all roll-formed profiles.
By maintaining complete internal tooling, cold-forming, punching, welding, and surface treatment lines, we remove external sub-contractor delays. This vertical integration allows us to offer short lead times even for custom profiles.
Located close to major maritime transport hubs, our logistics department optimizes container packing configurations. Secure structural strapping and moisture-barrier packaging prevent damage and corrosion during transit.
Inside our specialized testing center. Every batch undergoes strict mechanical and chemical validation.
Connecting international structural design requirements with seamless, expert installation engineering.
Our products are engineered in compliance with international racking standards including the US Rack Manufacturers Institute (RMI) standard, European FEM 10.2.02, EN 15512, and Australian AS4084-2012. Our structures undergo load-bearing verification and cross-sectional stability testing under full engineering loads.
Deploying a 4-way shuttle AS/RS requires precise installation tolerances. Millimeter deviations in rail level can affect shuttle pathfinding. Shenzhen Sunli offers comprehensive field engineering services:
Clear, direct technical answers regarding structural design, shuttle software integration, and purchasing logistics.
Complete your facility integration with heavy-duty structural components, security units, and multi-tier mezzanines.
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