EGM Tech's LED lighting products exclusively for freezers can be used for a long time at -50 degrees.Fully changed sealing (waterproof, moistureproof) technology is applied and it is regularly supplied to various places such as Binggrae and Korean Polar Research Institute every year.1. World's best airtight (waterproof, moistureproof) technology - Waterproof patent technology explanation - US patent, Korean patent, Korean patent 1, Korean patent 22. Using high-quality aluminum (AL6063) extruded heat sink and stainless steel (Sus304) - Applying heat sink designed by our company, domestic processing - is far more quality and heat dissipation efficiency than Chinese die-casting methods. - High-quality AL6063 and film treatment rarely cause rust, so it can be used in high-humidity or high-salt coastal areas. [AL6063 extrusion heat sink]3. Proven quality - 8 years,Starting with working lights for ships - lights exclusively for freezers sold from 2015 - frozen warehouses such as Binggrae, Agrang, Antarctic Sejong Base, Norwegian salmon farms, and many years of use in harsh areas.<br>