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- ag. (2022). technical data sheet of suprasec 2082.
- astm f1292-14: standard specification for impact attenuation of surfacing materials within the use zone of playground equipment.
- european chemicals agency (echa). (2023). reach regulation compliance report on polyurethane raw materials.
- kim, j., & lee, s. (2021). development of eco-friendly polyurethane foam for children¡¯s playgrounds, journal of applied polymer science, vol. 138, issue 12.
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