I've been coming to this site for several years. It's the only place I buy toner. The website is simple, you know the compatible toners, the prices are very good, the website is great because there's not a lot of advertising. No frills, just business, which makes me respect the company even more.
The order surprised me with how fast it arrived. Within 3 days it had arrived, very fast service, especially for a company based in California and I live on the east coast. All Products arrived in perfect condition with nothing missing. I will definitely remember to use them the next time.
Should I replace the toner chip before refilling the cartridge? - No. Always replace the toner chip after refilling your cartridge. Some cartridges have ability to detect toner level in the cartridge. If you install toner chip without adding toner, it might detect low toner level and save this information to the chip. In this case your toner chip will become useless and you will have to use new toner chip.
Will this toner chip work with non-USA printers? - These toner chips are tested and guaranteed to work with printers manufactured for North America including USA, Canada and Mexico. Those toner chips might not work for printers released in other countries.