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符合安全标准的儿童三轮车小零件（如螺帽、装饰件）应通过防吞咽测试，直径需大于31.7mm或牢固固定，选购时检查是否标注GB6675或EN71认证

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Unverified形状插块尺寸须大于3.17cm（防吞咽标准），3岁以下宝宝的配件应通过小零件测试（无法通过小物件测试筒），避免误吞窒息风险81% similar Unverified选购时优先看是否通过EN71或GB6675婴幼儿玩具安全标准认证，尤其关注小部件（拉环、纽扣、镜面）的拉力测试，缝线密度应≥6针/厘米防止脱线81% similar

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