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Material Special: High quality toner powder Smart and extra fluent printing performance **0% guarantee*****0% testing before delivery Feature: You get price benefit which save up to *0% when you buy compatible toner cartridge. Each cartridge features specially formulated toner which makes your printing look best Prompt order procedure and timely delivery within 5 days Considerable customer service and technical support How to guarantee the quality? 1. In order to guarantee the quality of our goods, all of them are finished under the air-condition and no UV light environment. 2. A full set of constant temperature and humidity testing equipment system. You are able to complete various temperature tests and experiments from **0°C to **0°C under various humidity. 3. In order to obtain a satisfied performance to product, not only can we supply the regular darkness testing, but also provide noise testing. 4. Torsional moment test is key to guarantee the product not damage the printer, the smaller torsional moment, the more stable running of toner cartridge. 5. With a view to finalize the **0% testing on production line, we purchased the printers which can test almost ***0 different modes of toner cartridge for Quality assurance 6. Our products have been exported to southeast of Asia, Europe, Australia, USA, Middle East, Common wealth of independent states, Africa.