【第 1 段建议】: 1. "lmpact"应为"Impact"。 2. "Semi-mobile"建议改为"Semi-Mobile"以保持一致性。 3. "EPCO"可能不需要大写形式，视具体品牌名称而定。 --- 【第 2 段建议】: 1. "this series of questions." -> "this series of questions has" (missing verb). 2. "cost for merchants, which is a concern of people." -> "cost for merchants, which is a concern for people." (preposition error). 3. "the plate head and the plate seat can be repaired by surfacing, spraying and brush plating." -> "the plate head and the plate seat can be repaired by surfacing, spraying, and brush plating." (missing comma before "and"). 4. "the function is not repaired." -> "the function cannot be repaired." (clarity issue). 5. "besides weldi" -> "besides welding" (spelling error). --- 【第 3 段建议】: 以下是发现的问题： 1. “Demand(multiple):”中的“Demand(multiple):”应加空格，应为“Demand (multiple):” 2. “brochures, catalogs）”中的右括号应更正为英文格式，正确应为“brochures, catalogs）”应为“brochures, catalogs）”。 3. “WhatsApp:+86 13761974616”中的“WhatsApp:+86”应为空格，应为“WhatsApp: +86 13761974616”。 4. “Sales Hotline: 0086-21-58386189”中“0086-21-58386189”和“0086-21-58386176”应替换为“+86 21-58386189”和“+86 21-58386176”以保持格式一致性。 5. “Website Map|Legal Notice|Contact Us”中的“|”应为空格前后，应为“Website Map | Legal Notice | Contact Us”。 请注意，某些格式和标点符号的使用可能会有所不同，具体取决于上下文和风格指南。