以下是您所提供文本中发现的拼写、单复数误用及标点错误： 1. "eco-friendly manufactured sand" - “eco-friendly”可以考虑使用“environmentally friendly”来避免可能的误解。 2. "Pingxiang Yangmeiling Building Material Co., Ltd," - 在“Ltd”后面需要加上句号（.）。 3. "the amount of natural sand is decreasing." - 这里使用“amount”不太合适，因为自然沙是可数名词，应该改为“the quantities of natural sand are decreasing.” 4. "The and because of government's limitation on sand quarrying," - 在“the”前面缺少一个主语，建议删除“the”并在句首添加一个“As”使其为"As because of government's limitation on sand quarrying," 或将句子重组为“Because of the government's limitation on sand quarrying, ...” 5. "the advanced and eco-friendly manufactured sand will absolutely replace the natural sand." - “the natural sand”中的“the”可以被删除，因为这里的“natural sand”指的是普通的、未经加工的沙子。 6. "the life span is over ten times of impact crushers" - 应该改为“the life span is over ten times that of impact crushers”更为标准。 7. "which makes the shape of finished sand product improved substantially." - 建议改为“which substantially improves the shape of finished sand products.”（注意“products”应使用复数形式） 8. "High Efficiency Based on the VSI Sand Making Machine, the new generation..." - “High Efficiency”后面应该加上一个冒号（:）。 9. "Meanwhile, the operation cost is lower." - 可以考虑修改为“Meanwhile, the operating cost is lower.”以使表述更准确。 10. "the dust-free site and the attainment of national environmental standard." - “the attainment of national environmental standard”应修改为“the attainment of national environmental standards.”以保持复数形式一致性。 总结：以上是您提供文本中的主要拼写、单复数误用和标点错误。