Many customers only care about whether decorative lights turn on. But what really determines their performance is whether they stay on — and for how long — under different conditions. Outdoor decorative lights face real challenges: summer heat, winter freezing, heavy rain, coastal salt spray, and long-term UV exposure. Before leaving our factory, every LEJIN decorative light product goes through five tests: High & Low Temperature Test, Rain Test, Salt Spray Test, UV Aging Test, and Pull Test.   1. High and Low Temperature Test We place light strings in a temperature chamber and operate them continuously at temperatures ranging from -40°C to 70°C to check their performance under extreme heat and cold. Summer ground temperatures can exceed 40°C — decorative light strings hang outdoors from morning to night. In northern regions, winter temperatures drop to -20°C or lower — wires become stiff, solder joints become brittle. Through this test, we ensure decorative lights work properly whether they're shipped to tropical or freezing regions — starting up reliably, maintaining stable brightness, with no material deformation or cracking. No "heat stroke," no "freeze-up."     2. Rain Test Outdoor festival lights face rainy seasons, typhoons, and humid weather. We spray products with water according to IP44 and above waterproof standards, simulating different angles and intensities of rainfall. String lights, connectors, and controllers — water intrusion anywhere can cause short circuits, electrical leakage, or complete failure of the entire festival light string. Through the rain test, we ensure festival light strings stay on during heavy rain — connectors stay dry, controllers stay safe.     3. Salt Spray Test Coastal cities, beach resorts, and harbor commercial areas have high salt content in the air. Ordinary metals rust within days. We place decorative festival lights in a salt spray chamber for hours or days to observe corrosion on metal parts, solder joints, and screws. Rusted screws mean decorative lights fall. Rusted solder joints mean decorative lights fail. Through the salt spray test, we ensure decorative light products don't rust quickly in coastal environments — installed once, they stay put, able to withstand sea breezes.     4. UV Aging Test Outdoor decorative lights are exposed to sunlight for years. Wires, housings, and lenses slowly age — yellowing, becoming brittle, even cracking. We use a UV aging chamber to simulate long-term sun exposure, accelerating the aging process to check material performance changes. Yellowing is a cosmetic issue. Cracking leads to water ingress and failure. Through the UV aging test, we ensure decorative light products remain in good condition after years of outdoor use.     5. Pull Test This is a test many customers don't think about — but it's one of the most common pain points during actual installation. Workers pull wires when hanging string lights and drag strings during setup — these actions create tension on the connections between wires, plugs, and sockets. If solder joints are weak or crimps are loose, wires can pull out, leading to poor contact or lights not working. In worse cases, it can cause short circuits, overheating, and safety hazards. We use professional pull testing equipment to apply standard-specified tension to power cords and connection points — ensuring every wire is properly soldered, securely crimped, and able to withstand pulling force.     LEJIN decorative lights must pass these tests before shipment: temperature, waterproofing, corrosion resistance, UV aging, and pull strength. Each test is not a formality. It's a real quality threshold. We don't promise "never fails." But we promise this: every batch of decorative lights that leaves our factory has gone through these tests.

    The motif lights arrive. You open the box. Wires, parts, controllers — and then what? This is the first reaction of many customers after receiving their order. Without installation guidance, they have to figure it out on their own: trial and error, rework, realizing halfway through that something is wrong, or even damaging the string lights. It wastes time, and the final effect often falls short. LEJIN's solution is simple: printed installation instructions + video tutorial. No guessing. Just follow along.   Two Formats to Cover Different Needs 1. Installation Guide (Illustrated) A printed instruction manual is included with the shipment, and a digital version can be sent in advance. It includes: parts list, installation sequence, mounting methods, wiring diagrams, important notes, and more. Perfect for quick reference while working. 2. Installation Video Tutorial (Demonstration) We provide live-action or animated walkthroughs based on customer lighting string needs — guiding them step by step. The video includes: unboxing, assembly process, mounting methods, power-on testing, and more. It breaks down language barriers — just watch the pictures and follow along.     More Than Convenience — It Reduces Risk Save time: Connecting frames have matching number codes. No need to figure it out yourself — just match the numbers. Installation time is cut by at least half. Save hassle: Avoid rework from incorrect installation. Get it right the first time — no taking things apart and starting over. Reduce risk: Poor installation can cause lights to fall, short circuits, or waterproofing failure. We tell customers how to avoid these issues before they happen.     From Factory to Customer — Peace of Mind at Every Step Before shipping: We send the digital installation guide in advance, so customers can prepare tools and personnel ahead of time. At shipping: The printed installation festival lighting guide is packed with the shipment — visible as soon as the box is opened. After shipping: Video tutorials are available anytime on YouTube. Have questions during installation? Contact LEJIN anytime. We provide remote technical support throughout the process.     LEJIN doesn't just "sell decorative lights" — we help customers "install them right and get the best results." Customer satisfaction drives us forward and gives us the confidence to promote our products. Lights arrived and you're not sure how to install them? Ask LEJIN for instructions and video. Follow along. No guesswork. No mistakes.

    Cities are judged by their architecture during the day, but by their lighting at night. Whether a city feels warm, vibrant, or cold after dark depends largely on how light is used. For 26 years, LEJIN has been making festival lights that appear on streets, plazas, parks, and commercial districts around the world — not just to illuminate, but to beautify. We help clients use lighting to enhance nighttime atmosphere, making streets warmer and cities more refined.   1. Beautifying Roads — Making the Journey Home Warmer Roads are more than passageways — they are part of a city's nighttime identity. Decorative lights installed on both sides of street poles add an extra layer of charm to what would otherwise be purely functional lighting. These seemingly small touches bring noticeable change: both pedestrians and vehicles experience a warmer, more welcoming street atmosphere. An ordinary road takes on a distinct character after dark.     2. Upgrading Cityscapes — Giving Public Spaces a "Premium Feel" Plazas, parks, and municipal buildings are a city's "face" — defined by design during the day and by lighting at night. Illuminated archways stand at the entrance, forming a glowing passage that clearly guides residents and visitors on their way. On both sides, two sculpted moose-shaped lights stand quietly, glowing warmly as if welcoming guests. As people walk in, they naturally get the feeling that "this is the right place." During the holidays, municipal building facades are tastefully illuminated — never overdone, always reflecting the city's character. Smart lighting does more than illuminate — it decorates.     3. Creating Nighttime Atmosphere — Bringing Commercial Streets to Life Shopping streets, pedestrian zones, and night markets are the battlegrounds of the nighttime economy. LEJIN's holiday decorative lights create a complete festive atmosphere for commercial streets. A giant spiral tree stands at the center of the plaza, with lights spiraling up its trunk — becoming the visual focal point of the entire area, drawing visitors to stop and take photos. Scattered around are various photo-worthy shaped lights — from thrones to moose — each one a natural photo spot. Holiday-themed lights such as Santa Claus are interspersed throughout, filling the street with a strong festive spirit, attracting foot traffic while boosting local visibility.     For 26 years, LEJIN's outdoor decorative lights have appeared on streets around the world. We don't just sell lights — we help clients solve problems with lighting: making roads more beautiful, giving cities more character, and bringing commercial areas more energy. Whether it's a single street, a public plaza, or an entire city — LEJIN's festival lights are quietly helping to illuminate the night, adding a unique touch to cities after dark.