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- oprea, s., & cadogan, d. (2019). polyurethane handbook: chemistry, raw materials, processing, applications. hanser publishers.
- zhang, y., et al. (2021). "recent advances in polyurethane-based sports equipment and protective gear." journal of applied polymer science, 138(12), 50321.
- wang, l., & li, j. (2020). "development and application of mdi-based polyurethane in the field of sports facilities." china plastics industry, 48(6), 45¨C49.
- european chemicals agency (echa). (2022). restrictions on diisocyanates in consumer products.
- Öйú»¯¹¤ÐÅÏ¢ÖÐÐÄ. (2023). Öйú¾Û°±õ¥ÐÐÒµÄê¶È±¨¸æ.
- astm international. (2021). standard guide for selection of polyurethanes for sporting goods (astm f292-21).
- guo, h., & chen, x. (2022). "sustainable development of polyurethane materials in outdoor leisure products." materials today sustainability, 17, 100132.
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