Material selection: equal emphasis on natural and recyclable materials Substrate: Made of high-strength corrugated cardboard, recycled pulp, or bamboo fiber composite material, with a tear resistance strength of over 70% of traditional wood. Coating: Use bio based waterproof coating or biodegradable polymer to ensure moisture resistance while avoiding chemical contamination. Adhesive: Use starch based adhesive or plant-based adhesive instead of traditional formaldehyde adhesive to achieve zero harmful gas release. Structural Design: Lightweight and Load Balancing Honeycomb cardboard structure: imitates honeycomb hexagonal design, disperses pressure, and has a load-bearing capacity of 200-300 kilograms, meeting the needs of body placement. Reinforcement design: Paper or bamboo fiber reinforcement strips are embedded at the four corners and bottom of the coffin to prevent deformation during transportation. Foldable process: Using laser die-cutting and indentation technology, the coffin body can be folded into a flat shape, and quickly assembled through buckles or pins after unfolding, without the need for tools. Production process: combination of automation and customization 3D printing template: Customize the shape, size, and decorative pattern of the coffin according to customer needs, with an error controlled within ± 1mm. Automated assembly line: From cardboard cutting, folding, coating to assembly, the entire process is mechanized, and the production time for a single coffin is only 15-20 minutes. Cost composition: Transparency and controllability Material cost: The price of recycled pulp and bamboo fiber is only one-third of that of solid wood, and there is no need for expensive metal accessories. Production cost: Automated assembly lines reduce labor costs, with individual labor costs accounting for only 10% -15% of the selling price. Transportation cost: After folding, the volume is reduced by 80%, and a single truck can load 50-80 pieces, reducing logistics costs by 70%. Price comparison: much lower than traditional coffins Cost effectiveness advantage: save money but not quality Functional benchmark: The load-bearing, waterproof, and flame-retardant properties are comparable to wooden coffins, but the price is 60% -80% lower. Emotional value: Personalized customization endows coffins with unique meaning, compensating for the "cheap feeling" brought by low prices. Long term benefits: Adapting to ecological burial can save cemetery costs. Paper coffins have achieved the triple goals of environmental protection, economy, and practicality through scientific material selection, precision craftsmanship, and large-scale production For users: enjoy high-quality funerals at low cost, personalized customization to convey emotions; To society: reduce resource consumption and promote the green transformation of the funeral industry; For the industry: Open up new markets, promote technological innovation and employment upgrading. One sentence recommendation: Paper coffins are not a 'cheap substitute', but a wise choice to redefine funerals with technology and culture