【第 1 段建议】: 1. "lmpact" 应为 "Impact" (字母错误) 2. "Aggregates Belt Conveyor" 应为 "Aggregate Belt Conveyor" (应使用单数形式，以符合行业标准) 3. "EPCO" 可能是缩写，但在上下文中未解释，可能需要检查是否为正确拼写。 --- 【第 2 段建议】: 1. "What are useful technical advantages of portable crusher plant" - should end with a question mark. 2. "limitation of electricity , crushing places" - remove the space before the comma. 3. "high transportation cost of raw materials." - should be "high transportation costs of raw materials." 4. "the best choice" - should be "the best choices." 5. "in the past decades, portable crusher plant has been fast developing" - should be "is fast developing." 6. "portable crusher plant is widely applied for middle and high hardness rocks.Iron ore" - should be a space after the period; "rocks. Iron ore." 7. "most rich metal in the world" - should be "the richest metal in the world." 8. "metallic iron can be economically extracted." - should be "that can be economically extracted." 9. "On the second, portable crusher plant is stable crushing capacity" - should be "Secondly, portable crusher plant has stable crushing capacity." 10. "and durable service life." - should be "and a durable service life." 11. "compact structure and convenient maintenance." - should be "a compact structure and convenient maintenance." 12. "Last but not least , There are mobile jaw crusher" - remove space before the comma and "There" should be "there." 13. "Great Wall Company proposes the mobile jaw crusher" - should be "Great Wall Company proposes mobile jaw crushers." 14. "Get Solution & Quotatio" - should be "Get Solution & Quotation." --- 【第 3 段建议】: 1. "Materials (brochures, catalogs）" - “）” 应更正为 “)” 2. "Demand(multiple):" - “Demand(multiple):” 应在“Demand”和“(multiple)”之间加一个空格，改为 "Demand (multiple):" 3. "EPCO Service" - "EPCO" 的拼写可能需要确认，因为常见的为 "EPC" (Engineering, Procurement, Construction)。请根据上下文确认。 4. "WhatsApp:+86 13761974616" - “WhatsApp:” 和号码之间应该加一个空格，改为 "WhatsApp: +86 13761974616" 5. "Sales Hotline: 0086-21-58386189 0086-21-58386176" - 应在第二个号码前加一个换行符或标点，以便明确区分两个号码。 其余部分无拼写、单复数和标点错误。