All cartridges are tested one by one before delivery to ensure complete working condition perfect compatibility and excellent print quality. ???????????? ?????????? ?????? ?????????? ?????????? ???????????? ????????????????. Compatible Printers: DCP-L5500DN Printer DCP-L5600DN Printer DCP-L5650DN Printer MFC-L6700DW Printer MFC-L6750DW Printer MFC-L5700DW Printer MFC-L5800DW Printer MFC-L5900DW Printer MFC-L6800DW Printer MFC-L6900DW Printer HL-L6200DW/DWT Printer HL-L6250DW Printer HL-L6300DW Printer HL-L6400DW/DWT Printer HL-L5000D Printer HL-L5100DN Printer HL-L5200DW/DWT Printer Details of the Structure : This high yield black Toner Cartridges the quality of prints clearly smoothly crisp dark sharp, keep real without fading, stably and long lasting. High-blackness toner makes the picture delicate firm fixing, distinct layers and image high precision. Package: Shockproof packaging to avoid shipping damage. Every Toner Cartridge is under strict quality control, carefully inspected and packaged to ensure that it is in the best condition. Warm Tips : Avoid environments where temperature and humidity change rapidly, such as next to air conditioners or heaters. Store in a normal temperature and humidity environment. We always care about your needs, and we strive to provide you with high-quality and cost-effective products