BJLS Lokfom which can also be used in the manufacture of cars, boats, trains and other means of transportation as well as household appliances and building materials. Harijaya Insulation Surabaya Sell BJLS Lokfom, namely steel sheets that have been galvanized to become rust resistant to the Sarana brand and widely used in roofing, ducting, siding, ceiling, floordecking, fencing, partition applications. Harijaya Insulation Surabaya Sell BJLS Lokfom with various sizes starting from 0.4mm to 1mm thickness.