MMIC054/055 series biological microscopes are equipped with excellent infinity plan achromatic objectives and wide field eyepieces. The ideal ergonomic design is adopted,such as low-lying focusing knobs, backward nosepiece and integrated handle, so that operate the instruments easier and have wider space, especially moving the instrumentsis better safety. They can be used for biology, medicine agriculture and industry area widely. They are the ideal instrument in medical treatment, teaching demonstrationand scientific research.