1、Samples use timely and fresh materials, uniformly sliced thickness, clear cell tissue boundaries, obviously colored tissues and organs, clear and uniform, contrasted slice dyeing. 2、There is a thick layer of sponge isolation between each type of specimen, which is beautiful and secure, greatly improving the security of the specimen. 3、Each type of specimen has exclusive colors, packing box with specimen details and name, and marked with a corresponding code, more visual and concise. 4、The set contains organizing cytology, botany, microbiology, zoology and entomology, is the set to sell with microscopes. 5、It is as a gift for children and students, to accompany children to watch magic biological world, to cultivate interest and seeking knowledge.