If there is no leakage of refrigerant in the Mijia Refrigerator Cross Door 510L, there is no need to add refrigerant.
For your reference, here’s more information about the refrigerant:
1. The refrigerant is a chemical substance used in cooling systems, such as refrigerators and air conditioners, that absorbs and releases heat to help transfer thermal energy and maintain low temperatures;
2. The refrigerant of the Mijia Refrigerator Cross Door 510L is R600a. R600a, also known as isobutane, is a highly efficient and environmentally friendly refrigerant commonly used in modern household refrigerators.