Shenzhen Sunli Intelligent Logistics Equipment Co., Ltd. is an industry-leading manufacturer specializing in structural, heavy-duty industrial racking and custom OEM compartment storage solutions. Operating from our advanced production facility spanning over 38,000 m², we leverage over 12 years of structural engineering expertise and 8 years of international trade operations to design and execute global intralogistics systems.
We supply third-party logistics (3PL) providers, multi-channel e-commerce fulfillment hubs, large-scale industrial distributors, and retail enterprises with structural storage systems built to withstand the rigorous demands of modern supply chains. Supporting dynamic load capacities and configured to optimize the vertical cube of modern warehouses, Sunli's engineering team consistently introduces over 120 structural improvements and new designs annually.
Industrial warehousing is undergoing a fundamental shift from simple pallet holding to complex SKU compartmentalization. With rising real estate costs and the pressure of rapid fulfillment, procurement heads require custom compartment storage configurations designed for stability, dynamic flexibility, and automated integration.
Modern e-commerce and manufacturing lines handle tens of thousands of individual SKUs. Compartment storage allows exact micro-location containment, reducing picking errors and optimizing warehouse throughput.
Enterprises require racking structures designed for seismic load conditions. Our design processes utilize finite element analysis (FEA) to ensure structural safety compliant with RMI and FEM specifications.
High-load shelving requires rigorous materials selection, certified weldments, and anti-corrosive powder coatings to protect assets and ensure worker safety over decades of operation.
We source certified structural carbon steels, primarily Q235B and high-tensile Q355B. This ensures structural elasticity under dynamic loads, mitigating rack failure risks due to forklift collisions or overloading.
Through our advanced electrostatic powder-coating lines, we supply custom dry-film coating thicknesses (typically 60-80 microns). This provides protection against humidity, chemicals, and physical abrasion.
Our structures support automated storage and retrieval systems (AS/RS). Frame deflections are engineered below L/240 to facilitate precise clearance tolerances required by shuttle systems and laser-guided automated guided vehicles (AGVs).
| Racking/Shelving System | Material Standard | Load Capacity (per tier) | Optimized Storage Application | Finish Options |
|---|---|---|---|---|
| Intelligent AS/RS Heavy Duty Steel Racking | Q355B / Q235B Structural Steel | 1,000 kg – 4,000 kg (Dynamic) | Fully Automated, High-Bay High-Density Distribution Centers | Epoxy Powder Coated / Hot-Dip Galvanized |
| Medium Duty 5-Layer Shelving | Cold-Rolled Steel (SPCC/Q235B) | 200 kg – 800 kg (Static) | Manual Picker Warehouses, Auto Parts Stacking, E-commerce | Corrosion Resistant Powder Coating |
| Multi-Level Heavy-Duty Mezzanine System | High-Grade H-Beam & Q235B Decking | 300 kg – 1,500 kg / m² | Vertical Space Maximization, Mixed Assembly & Inventory Space | Textured anti-slip powder coating |
| ESD Protection Adjustable Storage Racks | Conductive Powder-Coated Steel | 500 kg – 1,200 kg (Static) | Electronics Assembly, Semiconductor Cleanrooms, Components Storage | Anti-Static Electrostatic Powder Finish |
Our 38,000 m² factory integrates precision roll-forming, automated robotic welding, and dynamic quality control pipelines to produce high-load storage structures.
Our 35-person Quality Control team inspects weldments, material properties, paint adhesion, and dimensional integrity using specialized testing instruments.
Our laser-navigated forklifts feature high-precision LiDAR mapping systems, offering 6 to 8 hours of continuous operation under full loads. Safety-rated sensors ensure reliable integration alongside human staff, lowering collision risks and optimizing cycle times in dense pallet racks.
Engineered for automated crane and shuttle access, these high-bay structures maintain structural tolerances under extreme heights. Built to prevent cumulative deflection, they minimize system faults and support smooth operations for automated warehouses.
To support international growth, our team works closely with logistics planners from initial CAD layouts to site testing. Our custom OEM designs address the unique load conditions, floor flatness, and safety parameters of each facility.
We manufacture our systems using certified Q235B and Q355B carbon structural steel. Q355B is selected for heavy-duty columns and high-bay structures due to its higher yield strength (355 MPa), which allows for reduced material thickness while maintaining load performance. Q235B (yield strength 235 MPa) provides cost-effective durability for standard medium-duty shelving and low-profile racking systems.
Every custom rack profile is validated using Finite Element Analysis (FEA) software. This models the structure's behavior under static, dynamic, and seismic loads. Physical prototypes are then produced and subjected to load and mechanical testing, ensuring compliance with RMI guidelines and European FEM standards before volume production begins.
Our automated electrostatic powder-coating lines apply a thermosetting epoxy finish, maintaining a dry film thickness of 60 to 80 microns. Each batch undergoes cross-cut adhesion testing and impact testing to verify the coating will resist chipping and peeling under daily industrial use.
Yes. Our AS/RS rack systems are engineered to high dimensional tolerances. Standard upright configurations limit deflection to less than L/240 of the span, ensuring the flat clearances and precise path alignments required for robotic cranes, shuttles, and laser-guided AGVs to operate without collision.
We supply detailed assembly drawings, component layout plans, and structural load documentation with every shipment. For large-scale projects or complex AS/RS installations, our technical team provides remote support or on-site installation guidance to ensure the racking is correctly leveled and anchored.
SunliRack