Seven Mail Order products are recycled and manufactured at a factory of Japan Cartridge Recycling Industry Membership, to provide environmentally friendly and high quality products. We will respond quickly in the event of defects or defective products, and we will deliver a quality inspection product that has passed free domestic shipping (except Okinawa isolated islands). We are confident that you will receive a free replacement for defects such as thin printing, etc. The card ridges can be collected nationwide for free (except Okinawa and remote islands). Please contact us if you are unsure about returning the product or other reasons.