【第 1 段建议】: 1. "lmpact" 应为 "Impact" （字母 "l" 应为 "I"）。 2. "powde" 应为 "powder" （拼写错误）。 --- 【第 2 段建议】: 1. "Summary：" 应改为 "Summary:" 2. "appear as nodules, massive," 中的 "massive," 应为 "massive." 3. "according to the role of barite materials to determine its product size." 中的 "its" 应改为 "their"。 4. "jaw crusher, cone crusher, barite mill, powder separator, electromagnetic vibration feeder, bucket elevator, circular vibration screen, pulse dust collector, belt conveyor and so on." 中缺少 "and" 在 "belt conveyor" 前面，应该为 "belt conveyor, and so on." 5. "Three, the production line process" 应改为 "Three. The production line process" 6. "by bucket elevator to storage. Bin," 中的 "storage. Bin," 应为 "storage bin,"（去掉大写）。 7. "to the barite mill for grinding." 后面缺少句号。 8. "The material that meets the requirements is sent to the storage bin through the pipeline and exported to the discharge valve as the finished product powder." 中的“exported”应为“exited”或“discharged”，使用“exported”不太合适。 9. "dust collector and then discharged into the atmosphere." 后面缺少句号。 请处理以上问题。 --- 【第 3 段建议】: 1. "WhatsApp" 应为“WhatsApp”。 2. "Demand(multiple):" 应为“Demand (multiple):”。 3. "Materials (brochures, catalogs）" 中的右括号应为英文括号，改为“Materials (brochures, catalogs)”。 4. "EPCO Service" 中的 "EPCO" 应为 "EPC"。 5. "WhatsApp:+86 13761974616" 中的“WhatsApp:”应为“WhatsApp: ”，需加空格。 6. "Sales Hotline: 0086-21-58386189 0086-21-58386176" 中缺少逗号或连接词，建议改为“Sales Hotline: 0086-21-58386189, 0086-21-58386176”。