【第 2 段建议】: 1. "high-yield and stable for long time" 应为 "high-yield and stable for a long time" (缺少冠词). 2. "F5X1345 Feeder" 应为 "F5X 1345 Feeder" (型号与名称之间需有空格). 3. "HPT300 Cone Crusher*2" 应为 "HPT 300 Cone Crusher *2" (型号与名称之间需有空格，且星号前后需有空格). 4. "1.The major equipment" 应为 "1. The major equipment" (数字与句子之间需有空格). 5. "2.The structure of the plant" 应为 "2. The structure of the plant" (数字与句子之间需有空格). 6. "the whole design is very reasonable, which effectively red" 的句子末尾缺少完整内容，需检查是否有遗漏。 --- 【第 3 段建议】: 1. "3.All" 应为 "3. All"（需要加空格） 2. "equipment are" 应为 "equipment is"（因为“equipment”是不可数名词） 3. "high quality part" 应为 "high-quality parts"（需要加连字符并使用复数形式） 4. "which can ensure providing convenient services." 可考虑改为 "which can ensure the provision of convenient services."（语法更为准确）