LED lamps are directly or indirectly exposed to the air with a certain degree of moisture. Imagine there’s a poorly designed structure that is not moisture resistant enough, and the moisture penetrates the lamp. Now that it’s been lit up for long hours and is wet, the resin falls off from the metal substrate, pulls apart the welded wires, and eventually cuts the connected circuit. A deficient design may restrict the fields, places, and conditions of product usage. That’s why LED designers and manufacturers have to always focus on the moisture-resistance structure. That requires the best compatibility of resin and metal substrates, advanced injection molding technology, appropriate molding temperature, and molding process time.