Good After Sales:We have a professional pre-sales and good after-sales service team. Whether you have any questions before or after sales, you can communicate with us directly, and we will give you a satisfactory reply within 12 hours as soon as possible. High Precision Technology: The dual ink technology used in this print head is an innovative combination of the brightest dye-based color inks and permanent water-resistant pigment-based black inks, showing every detail on plain paper, allowing you to fully and accurately display your colors Performance. Accurate Professional:Printer Head is compatible with hp printers, and can be prepared to print out your prints accurately and clearly on your printer, presenting your text in high quality, more accurate and professional. Environmental Friendly:The Print Head is made with excellent craftsmanship and can work well with your printer to reduce waste and waste generated by printing products, maintain a good environment, and be healthy and environmentally friendly. Compatible With:729 Printhead Compatible With hp DesignJet T830 MFP & T730 Large Format Plotter Printers.