【第 1 段建议】: 1. "lmpact"应为"Impact"。 2. "Spiral Classifier"前的"High Weir"应为"High Weir Spiral Classifier"（去掉多余的空格）。 3. "Submerged Spiral Classifier"中的两个空格应为一个空格。 4. "EPCO"应为"EPIC"（如果是指"Engineering, Procurement, Construction"的缩写，原文可能有误，应核实）。 5. “Home > Blog > Application of washed sand e”显然未完整，应补全。 请确认这些内容以确保无误。 --- 【第 2 段建议】: 1. "quipment"应为"equipment"。 2. “Application of washed sand equipment in sand and gravel production line”末尾应加句号。 3. “water washing methods”中的“methods”应为“method”保持一致的单数形式。 4. “According to its appearance and design principle, the washing sand equipment”中应为“washing sand equipment”前的“the”去掉。 5. “The sand washing machine is a washing device for artificial sand (including natural sand).”中“washing device”的“washing”应与上文保持一致形式。 6. “sand washing process at the last stage”可改为“the last stage of the sand washing process”。 7. “the price of washed sand machinery varies from manufacturer to manufacturer”中应为“prices”以保持复数形式。 8. “Washed sand machinery and equipment are not only widely used in sand and gravel production lines”中“are”可改为“is”以保持主谓一致（“machinery and equipment”视为一个整体）。 9. “During the use of sand washing equipment, customers should pay special attention to the regular maintenance and installation of some equipment.”中“some equipment”可改为“the equipment”更为准确。 10. “At the same time, pay attention to whether the bolts of the various parts of the equipment are tight.”中“tight”应为“tightened”以符合句子语境。 --- 【第 3 段建议】: 1. "the characteristics of the production materials, and their own demand for production." - 应去掉“and”，即“the characteristics of the production materials and their own demand for production.” 2. “technical support, and after-sales service.” - 应去掉“and”，即“technical support and after-sales service.” 3. “Demand(multiple):” - 需在“Demand”和“(multiple)”之间加空格，改为“Demand (multiple):”。 4. “Materials (brochures, catalogs）” - 括号中的符号应统一，改为“Materials (brochures, catalogs)。” 5. “WhatsApp:+86 13761974616” - 应在“WhatsApp:”与“+86”之间加空格，改为“WhatsApp: +86 13761974616”。 6. “Sales Hotline: 0086-21-58386189” - 需在“Sales Hotline:”与“0086”之间加空格，改为“Sales Hotline: 0086-21-58386189”。 其他没有发现拼写、单复数和标点的问题。