FAQ

SMD LEDs are compact and ideal for high-brightness applications. DIP LEDs are robust for indicators and outdoor use. High-Power LEDs deliver strong luminous output and require proper heat dissipation, suitable for industrial and horticultural lighting.

Store LEDs in a dry, ventilated environment (-40°C to +100°C, humidity <85%). Use within 3 months of packaging. During soldering, maintain correct temperature (295°C ±5°C, within 3 seconds). Avoid mechanical stress and allow cooling before handling.

Wear anti-static wristbands and gloves. Ground all equipment and workstations. Use ion fans to neutralize static charges. Store LEDs in anti-static packaging to prevent reverse leakage or brightness loss.

Failures include dead lights from poor soldering, moisture damage, static electricity, and mismatched power supply. Prevent by following soldering guidelines, proper storage, ESD protection, and matching power supply with thermal design.

Use LEDs from the same batch, drive with consistent current, and avoid mixing packages. Implement strict quality control and calibration during assembly.

Define spectrum needs by plant species and growth stage (blue for vegetative, red for flowering). Use high-efficiency horticultural LEDs with proper thermal management. Ensure uniform distribution and compliance with agricultural standards. Integrate smart controls for scheduling and energy optimization.

Consider luminous efficacy, lifespan, and robust housing. Ensure compliance with CE, RoHS, UL, and local standards. Select fixtures with proper IP rating for dust/water resistance. Evaluate total cost of ownership including energy savings and maintenance.

Yes, most products support PWM or 0–10V dimming. Selected models are compatible with smart control systems for remote scheduling, monitoring, and adaptive lighting.

Clean fixtures regularly to prevent dust accumulation. Use protective covers in heavy smoke or humidity. Select waterproof-rated fixtures (IP65+) for outdoor use. Ensure ventilation to extend lifespan.

Queendom fixtures use durable housings and reinforced structures to resist vibration. Unlike glass fluorescent lamps, LEDs are solid-state and less prone to breakage, suitable for industrial environments.

Standard warranty is 3 years. Premium models may extend up to 5 years depending on category and region.

Warranty covers defects in materials and workmanship. Exclusions include misuse, improper installation, unauthorized modifications, or environmental damage beyond design limits.

Contact Queendom Support Center with product details, proof of purchase, and issue description. Our team will guide troubleshooting, repair, or replacement.

Submit a return request via Support Center or distributor. Products must be in original packaging with documentation. Approval depends on warranty status and inspection.

Reach us via Support Center portal, email, or authorized distributors. Our team assists with technical inquiries, warranty claims, and procurement guidance.

Orders can be placed through Queendom sales representatives or distributors. Bulk quotations can be requested via Support Center or sales team.

Lead times vary by product (2–6 weeks). Expedited delivery available upon request, subject to inventory and logistics.

Yes, we provide commercial invoices, packing lists, and customs documentation. Compliance with export regulations is ensured.

Accepted methods include bank transfer, credit card, and trade financing. Terms vary by order size and customer profile.

Order tracking is available via Support Center or logistics partners. Customers receive shipment updates and tracking numbers upon dispatch.