Adopts high-quality materials designed for courier transport. High-strength design resistant to stacking and pressure. Changing the "invisible losses" of e-commerce logistics, starting with cardboard boxes. On July 1, 2026, Plus One (brand name: Danbo-ru Plus) will launch a crowdfunding campaign for "Danbo-ru Plus," a high-strength cardboard case, to solve logistics challenges faced by e-commerce businesses and handmade artists, such as "product damage during shipping," "return and reshipment costs," and "excessive packaging." With the recent expansion of the e-commerce market, the number of parcels handled by courier services is increasing. However, due to driver shortages and the need for delivery efficiency in logistics operations, the packing density of parcels is increasing, leading to frequent instances of crushed boxes and damaged products during transport. As a result, many small businesses are forced to bear the costs of returns and reshipments, facing a situation where they lose potential profits. We view this problem not merely as an issue of cardboard quality, but as a societal challenge. The first thing a customer sees is not the product, but the "box." A "crushed box" not only damages the product but also the business's credibility. In e-commerce, the first thing a customer sees is not the product but "the box that arrived." Even if the product is intact, a damaged box can cause anxiety for the customer. Especially for sole proprietors and handmade artists, a single negative review can have a serious impact on sales. We recognize that "the quality of the box is part of the brand value," and we are concerned about the following losses caused by product damage: - Returns processing - Reshipment processing - Inquiry handling - Lowered review ratings - Reduced repeat purchase rates The negative cost chain created by insufficient strength Many low-priced cardboard boxes currently in circulation are of insufficient strength, forcing shippers to use excessive