The optimal culture vessel for long-term cell culture, large-scale cell expansion and contamination-proof. yonyue cell culture flask is developed from an anti-pollution point of view to provide safe protection for cell culture. The gas-permeable caps feature an innovative filter membrane to prevent cell contamination and ensure good gas permeability. During the production process, each culture flask is pressure tested to ensure no leakage and maximize the safety of the experimental process. The cell capacity of the front plate of the culture flask can be snapped into the slot and flip cover positioned between the slots on the back of the cell culture flask; in this way, the space of multiple culture flasks can be stacked and placed for movement, preserving the culture and facilitating management. The junction of the cell culture flask includes two trapezoids and a trapezoid plate, and the angle between the trapezoid plate and the front plate is 130; The inclination angle…