Jolek Inc.,Jolek - The Premium Cartridge Company manufactures the cartridges of choice to those who look for OEM quality at a discount. Jolek laser printer cartridges are manufactured using ISO certified components and are JVAT certified. Jolek manufactures their products with quality components and uses proprietary quality control methods, guaranteeing the best possible print quality. The results are the most competitive cost per page products on the market today. We need to restate the fact that 95% of our customers are repeat customers and the other 5% are still using their first Jolek cartridge.