Led screen

The Pixel Pitch (P) determines the clarity and minimum viewing distance. For indoor use, P1.2 to P2.5 is standard for high-definition close-up viewing (2-5 meters). For outdoor advertising, P4 to P10 is more cost-effective as the viewing distance is typically over 10 meters. A professional rule of thumb is that the minimum viewing distance in meters equals the pixel pitch in millimeters.

For outdoor screens, brightness must be at least 5,000-7,000 nits to remain visible under direct sunlight. Indoor screens usually require 600-1,200 nits. To ensure flicker-free performance on camera (essential for events and studios), prioritize a refresh rate of ≥3,840Hz. Standard screens at 1,920Hz may show scan lines during filming.

To ensure safety and legal entry into markets, verify that the supplier provides CE, RoHS, and FCC certifications. For the North American market, UL or ETL listing is highly recommended for electrical safety. Additionally, ensure the product has an IP65 or IP66 rating for outdoor installations to guarantee protection against dust and heavy rain.

SMD (Surface Mounted Device) is the industry standard offering excellent color uniformity and wide viewing angles. However, for high-traffic areas or rental use, GOB (Glue on Board) technology is superior as it adds a protective transparent coating that makes the screen waterproof, dustproof, and anti-collision, significantly increasing durability.

Always request a 72-hour aging test video and a third-party inspection report before final payment. Ensure the supplier uses flight cases for rental screens or fumigated wooden crates for fixed installations to prevent vibration damage. It is standard practice to negotiate a 2% to 5% spare parts kit (including LED modules, receiving cards, and power supplies) to be included in the shipment for immediate repairs.

Focus on the brand of the LED lamp beads (e.g., Nationstar, Kinglight) and the driver IC (e.g., MBI, ICN) rather than just the total price. Suppliers on Made-in-China.com are often open to negotiation if you offer a long-term procurement forecast. Ask for a detailed Bill of Materials (BOM) to ensure they don't swap high-end components for cheaper alternatives after the sampling phase.

LED screens are heavy and fragile; Sea Freight (LCL/FCL) is the most economical for large displays, while Air Freight is reserved for urgent modules. Confirm if the supplier provides remote technical support or on-site installation guidance. Many top-tier suppliers on Made-in-China.com offer CAD wiring diagrams and configuration files (RCFG) to simplify the setup process for your local engineers.

Utilize secured payment services provided by the platform to ensure funds are only released upon proof of shipment. Avoid direct transfers to private accounts. For large-scale projects, consider using a Letter of Credit (L/C) or a staged payment plan: 30% deposit, 60% after production/inspection, and 10% after delivery/installation to maintain leverage over quality control.