I ordered 2 sets of printer cartridges for my Canon MG 5220. It takes PGI-225/CLI-226 ink cartridges. Meritline sent me packages marked PGI-220/CLI221. Even the packaging did not claim to be compatible with my printer but customer service insisted that the cartridges that they sent were compatible... my printer thought otherwise despite trying all their suggestions. The return policy basically requires the customer to pay for everything in the hope of getting a partial refund.