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After long-term, rigorous research and development, KMC chain presents the color chain for multiple-speed use!
经过长期，严谨的研究和开发，桂盟链条呈现的颜色多速度使用！
youdao
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After long-term, rigorous research and development, KMC chain presents the color chain for multiple-speed use!
经过长期，严谨的研究和开发，桂盟链条呈现的颜色多速度使用！
youdao