About copyright

sumif is a registered trademark of euforian Inc. Documents, images, sounds and other works provided by euforian Co., Ltd. are protected by copyright laws, other laws and international treaties. Reproduction, diversion, transmission, screening, etc., of part or all of these contents as they are or modified without our permission is prohibited regardless of media or means. In addition, it is not permitted to transform, change, or modify the contents of the content.

On the other hand, we are always accepting collaboration projects using the sumif trademark, so please feel free to contact us.