This usually happens after screening (4.4.3), where dust and fines are removed. Vacuum coating is a common modern technique used to ensure the oils penetrate deep into the pellet rather than just sitting on the surface.

In power distribution, "4.4.4" often appears in technical manuals or regulatory codes (like those from Electricity Regulatory Commissions ) to define standards for feeder lines.

A feeder is the high-voltage line that carries electricity from a substation to a local transformer.

It often covers the verification of Data Transmission (e.g., via MQTT protocol) or Weight Sensor Calibration (ensuring the "feeder" releases exactly the right amount of food).

If you can specify if this is for aquaculture , electrical engineering , or software development , I can provide a much more detailed breakdown of that specific section! west bengal electricity regulatory commission - WBSEDCL