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Langdison are comprehensively integrated energy conservation solution provider involved with design, R&D, manufacture, sale, installation and construction.we devotes itself to developing new products with Inspiration and Innovation. we have professional R&D team that having abundant experience in industrial design,electronic driver,heat simulation analysis,optical lens design and lighting control system. So far, we have done many projects all over the world, Canada Toyota, Malaysia Genting Hotel and South America countries Highway , municipal public lighting projects in Colombia, so far we have installed over 70000pcs led street light lumnaires in different cities ,Bogota,Cali, Tunja, Medellin,Sincelejo,Villavicencio ,Puerto Carreno ,in Colombia.