【第 1 段建议】: 1. "lmpact" 应为 "Impact" (l与I混淆) 2. "High Weir Spiral Classifier" 应去掉多余的空格，改为 "High Weir Spiral Classifier" 3. "Submerged Spiral Classifier" 应去掉多余的空格，改为 "Submerged Spiral Classifier" 4. "EPCO" 可能为误写，需确认是否为 "EPC"。 5. "中国" 通常用简体或繁体中文表达，建议修改为 "中文" 或 "Chinese"。 --- 【第 2 段建议】: 1. "singlesand maker" 应分开为 "single sand maker"。 2. "machinecan" 应为 "machine can"。 3. "thishigh" 应为 "this high"。 4. "and shaping equipment on the market." 句末缺少句号。 --- 【第 3 段建议】: 1. "due to it can bring you higher rates of return." 应修改为 "due to the fact that it can bring you higher rates of return." 2. "proper sand maker depending on production capacity because it can realize cost- effective." 应修改为 "proper sand maker depending on production capacity because it can realize cost-effective."（去掉"–"） 3. "consult online or leave a message, our technician will answer for you online in time." 应修改为 "consult online or leave a message; our technician will answer for you online in time."（将","替换为";"） 4. " SBM's factory for inspection. (You can also take material to test our machine.)" 应修改为 "SBM's factory for inspection (you can also take material to test our machine)."（去掉句号并小写"Y"） 5. " Demand(multiple):" 应修改为 "Demand (multiple):"（在"Demand"和"("之间增加一个空格） 6. "Operational Support" 的"Support"前面没有对应的上下文，不应大写。 其他内容没有发现错误。