It was a conversion, eco-liter milk production equivalent to 2.5 square meters to create a pasture, grazing birds, butterflies and plants important living space.

• 有人换算出，生产每升生态牛奶等于营造2.；5平方米牧场，牧场是鸟类、蝶类和花卉植物重要的生活空间。