Lens adjustable between 60°, 90 and 105°, by which to solve the demad for projects requesting various beam angle. This lens zoomable LED high bay is also with exquisite and compact appearance. The private molding is made by ADC12 die casting aluminum with thermal conductive coating to meet the heat dissipation requirements, and anti- corrosion surface treatment to enhance the anti-corrosion performance. The housing is made by unibody die-casting to make sure the whole shell can be used for heat transmittance, ensuring sufficient thermal dissipation area. PC lens is made of Japanese Teijin PC material, with a light transmission of up to 92% and higher light efficiency.