A dairy processing line typically involves several stages to transform raw milk into various dairy products. The process begins with the collection of raw milk from dairy farms, which is then transported to the processing plant. Upon arrival, the milk undergoes a series of treatments to ensure it is safe and suitable for consumption.

The first step in the processing line is usually pasteurization, a heat treatment process that kills harmful bacteria while preserving the milk's nutritional value and taste. After pasteurization, the milk may be homogenized, a mechanical process that breaks down fat globules to prevent them from separating and rising to the top, ensuring a uniform texture.

Following these initial treatments, the milk can be further processed into different products. For example, it can be separated into cream and skim milk, which are then used to produce butter, cheese, yogurt, and other dairy products. Each product requires specific processing steps, such as fermentation for yogurt or cheese making, or additional fortification with vitamins and minerals.

The processing line also includes packaging, where the finished products are filled into containers such as bottles, cartons, or wrappers. Quality control checks are conducted at various stages to ensure that the products meet safety and quality standards.

Finally, the dairy products are stored in a controlled environment to maintain freshness and quality until they are ready for distribution to retailers and consumers.