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, so please contact us with the description. Free domestic shipping (excluding Okinawa isolated islands) products have passed quality inspection. 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.