【第 2 段建议】: 1. "Summary："应为"Summary: " 2. "the grinding media of different materials, rolls and rings,"后面不需要逗号。 3. "pipeline, cyclone dust collector and finished warehouse,"后面应为逗号。 4. "the inner wall of classifier, pipeline, cyclone dust collector and finished warehouse,"应为"the inner wall of the classifier, pipeline, cyclone dust collector, and finished warehouse." 5. "to clean up the residual raw materials in the chamber and bellows of the mill,"应为"to clean up the residual raw materials in the chamber and bellows of the mill." 6. "adjust the classifier to the high speed of processing the corresponding fine powder,"应为"adjust the classifier to the high speed for processing the corresponding fine powder." 7. "and start the wall vibrator on the finished warehouse,"应为"and start the wall vibrator in the finished warehouse." 8. "so that it can run for more than 4 hours empty,"应为"so that it can run empty for more than 4 hours." 9. "in which proper tapping of the pipeline and cyclone collection are required."应为"where proper tapping of the pipeline and cyclone collection is required." 10. "The outer shell of the duster and the finished product warehouse is used to assist in removing the residual residue."应为"are used"因为主语为复数。"residual residue"可简化为"residue." 11. "and neglect this key process, especially in the production of ultra-fine powder with strict restrictions on large particles."应为"while neglecting this key process, especially in the production of ultra-fine powder with strict restrictions on large particles." 12. "the sequence of starting and closing of each equipment"应为"the sequence of starting and stopping each piece of equipment." 13. "the fineness of the product starts first,"应为"the fineness of the product must start first," 14. "induced draft fan can start first"应为"the induced draft fan can start first." 15. "the classifier and induced draft fan will be shut down"应为"the classifier and the induced draft fan will be shut down." 16. "from blowing large particles in the mill over the classifier causing pollution."应为"from blowing large particles in the mill over the classifier, causing pollution." 17. "Go"没有完整删除，应该完整展示。 --- 【第 3 段建议】: 1. "Demand(multiple):" 应为 "Demand (multiple):"（添加空格） 2. "Materials (brochures, catalogs）" 中的括号应改为英文的右括号，改为 "Materials (brochures, catalogs)"（右括号错误） 3. "WhatsApp:+86 13761974616" 中的 "WhatsApp:"和号码之间应添加空格，改为 "WhatsApp: +86 13761974616"（添加空格） 4. "Sales Hotline: 0086-21-58386189" 的后面没有标点符号，建议在最后添加句号，改为 "Sales Hotline: 0086-21-58386189."（缺少句号）