1. Main materials for the coffin body: fir wood, plywood (plywood). 2. The main materials of the coffin body must all meet the national environmental protection requirements. 3.The side panels of the coffin body are made of 9 mm thick plywood, and the bottom panel is made of 9 mm thick plywood. Two-layer round cover. 4. Specifications of the wooden square for the coffin body: The upper wooden square is 50 mm wide and 20 mm thick. The lower wooden square is 60 mm wide and 20 mm thick. 5. The product can bear A load of over 200 kilograms. 6. The product was internally loaded with 150 kg and dropped from a height of 50 CM without any damage to its structure. 7. The overall structure of the product remains undamaged when subjected to external force impact (with a thrust of 50 kg and maintained for 1 hour, the coffin structure remains
