The MHL2800 series of biological microscopes are equipped with excellent infinity-corrected plan achromatic objectives and wide-field eyepieces, offering clear imaging and a broad field of view. The ergonomic design meets human engineering standards, featuring a low-positioned focusing knob, inward-type objective changer, and an integrated handle design, making operation more convenient and comfortable, with more space, and safer handling of the instrument. The product is widely applicable in fields such as biology, medicine, industry, and agriculture, and is an ideal instrument for medical, educational, and research institutions.