9 watt led bulb

When sourcing a 9W LED bulb, you must prioritize Luminous Efficacy, which should ideally be ≥90 lm/W to ensure the bulb actually replaces a 60W incandescent. Check the Color Rendering Index (CRI); for residential or retail use, a CRI >80 is standard, while CRI >90 is preferred for high-end applications. Additionally, verify the Driver Type (IC constant current vs. RC capacity-resistance); IC drivers are essential for voltage stability and flicker-free performance, significantly extending the bulb's lifespan to 25,000+ hours.

Compliance depends on your target market. For the European Union, bulbs must have CE, RoHS, and ERP certifications. For the United States, UL or ETL listing is critical for safety, and Energy Star certification is preferred for utility rebates. For the Middle East, look for SASO certification. Always request LM-80 reports for the LED chips and LVD/EMC test reports to ensure the product won't interfere with other electronic devices.

Heat is the primary enemy of LEDs. High-quality 9W bulbs utilize thermally conductive plastics with aluminum inserts or pure aluminum heat sinks. Avoid bulbs that feel excessively light or lack proper venting, as poor heat management leads to lumen depreciation and premature driver failure. Ensure the junction temperature remains within the manufacturer's specified limits during a 48-hour burn-in test.

For enclosed fixtures, you must source bulbs specifically rated for enclosed spaces to prevent overheating. For dimmable circuits, ensure the bulb uses a Triac-dimmable driver compatible with local dimmer brands (e.g., Lutron or Leviton). For outdoor use, the bulb should have an IP65 rating or be placed in a protected housing to prevent moisture ingress into the E27/B22 base.

Specify the LED chip brand (e.g., San'an, Bridgelux, or Lumileds) in your purchase contract. Use Made-in-China.com's Secured Trading services to hold payment until a third-party pre-shipment inspection (PSI) confirms the lumen output and color temperature (CCT) consistency matches the approved sample.

LED pricing is highly sensitive to component costs (aluminum and semiconductors). Negotiate based on tiered volume pricing; for 9W bulbs, price breaks usually occur at 5,000 and 20,000 units. If you are a startup, look for suppliers on Made-in-China.com that offer 'Ready-to-Ship' products with lower MOQs, even if the unit price is slightly higher, to test market demand.

LED bulbs are lightweight but fragile. Ensure the Master Carton meets 3-ply or 5-ply corrugated standards and passes a drop test (ISTA 1A). Because bulbs are high-volume/low-weight, calculate the Volumetric Weight carefully. For large orders, Sea Freight (FCL/LCL) is most economical, but ensure the containers are kept away from excessive heat sources during transit to protect the internal electrolytic capacitors.

Prioritize Audited Suppliers on Made-in-China.com who have undergone on-site verification by independent bodies like SGS or Bureau Veritas. Review their Business License to ensure their scope includes 'Manufacturing' rather than just 'Trading' to get better factory-direct pricing and technical support.