【第 3 段建议】: 1. "whose" should be "which" in "whose quality is completely comparable to the natural sand." 2. "high-quality of finished product" should be "high quality of finished products." 3. "It's a" should be followed by a complete sentence (in "5 Million TPY Sand Making Plant"). 4. "this project is the first aggregates production item in loca" should be completed (in "500TPH Granite Sand Making Plant"). 5. The HTML entities need to be replaced or corrected (like “©” should just be “©”).