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强制性国家标准（以下简称“新国标”），指2019年4月15日实施的《电动自行车安全技术规范》；旧标准是1999年10月1日实施的《电动自行车通用技术条件》。两者主要差别为：（1）最高设计车速：新国标为25km/h；旧国标为20km/h。（2）整车最大质量：新国标为55kg；旧国标为40kg。（3）电动机最大功率：新国标为400W；旧国标为240W。而在规定中，新旧国标均要求必须具有脚踏骑行能力等。
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China and Brazil have broad prospects for cooperation in various fields, such as economic and trade exchanges, scientific and technological innovation, and people-to-people exchanges, said Cui Shoujun, professor and director of the Institute of International Development Studies at the School of International Studies at Renmin University of China, during an interview with China News Network.
The year 2024 marks the 50th anniversary of the establishment of diplomatic ties between China and Brazil. He believes that the two countries with strategic and innovative visions are expected to promote the steady development of bilateral relations, and jointly work together for the next "golden 50 years".(Gan Tian)
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