【第 1 段建议】: 1. "Vertical Shaft lmpact Crusher" should be "Vertical Shaft Impact Crusher" (capital 'I' instead of lowercase 'l'). 2. "Aggregates Belt Conveyor" should be "Aggregate Belt Conveyor" (singular 'Aggregate' instead of plural 'Aggregates'). 其余部分无错误。 --- 【第 2 段建议】: 1. "advantagesof" 应为 "advantages of"（缺少空格）。 2. "aprons,"" 应为 "aprons,"（去掉 "）。 3. "C&D" 应为 "C&D"（去掉 &）。 --- 【第 3 段建议】: 1. "What are Advantages of Impact Crushers?" 应为 "What are the Advantages of Impact Crushers?" 2. "choice in many industries:" 应为 "choice in many industries:" (多余的空格) 3. "When to Choose an Impact Crusher?" 应为 "When to Choose an Impact Crusher:" (应使用冒号而非问号) 无错误 --- 【第 4 段建议】: 1. "WhatsApp" 应去掉多余的 "WhatsApp" 行。 2. "Materials (brochures, catalogs）" 中的右括号应为英文的右括号，即 "catalogs)"。 3. "Get Solution & Quotation" 中 "Quotation" 不需大写。 4. "Life-cycle Service" 中的 "Life-cycle" 应为 "Lifecycle" 或 "Life Cycle"。