Medical grade material: made of medical grade polystyrene (PS), which has excellent light transmittance and is convenient for observing the morphology of cells at various stages.Treatment process: According to the different surface treatment processes, there are hydrophilic cell culture bottles (for adherent cells) and hydrophobic cell culture bottles (for suspended cells).Different bottle caps: each one has a sealed cap and a filter cap. The sealing cover provides a semi-open culture or closed culture switch structure with both visual and tactile indications; The filter cover has a 0.22um breathable water-blocking membrane, which can meet the demand of gas exchange in cell and tissue culture and effectively prevent cross-infection.Inclined design: the neck design inclined upward makes it easier for pipette or cell scraper/shovel to enter.Calibration mark: both sides of the culture bottle are provided with capacity calibration marks and reserved writing areas.