Should pay attention to what the problem fern specimens were collected? The classification is based on fern sori of construction, arrangement, leaf shape and characteristics, such as roots, so to harvest the whole plant, including the roots with sporangia and otherwise is not easy when the identification. If the plant is too early childhood herbarium, you can pick a part of the blade (but with the tip of the midrib and side section) plant specimens, petioles and some roots, while carefully note the actual height of the plant, width, number of lobes and petiole length. Branches seed herbarium specimen must be collected complete with clipping or digging to represent the fruit of the plant species (woody plants) or the whole plant (herb), the size of the master at length 40cm, 25cm wide range. Refers to biological specimens of plants and animals and microorganisms after processing saved organism itself, but the essence is to use biological models of some special material to produce bio-simulation imitation body natural plant specimens that we should not confuse these two words. Production of biological specimens of any use it? The first biological specimens can provide the most direct, reliable, accurate and relevant data for intuitive physical scientists, for in-depth study of indoor plants and animals living, growth and development of the law in this area has a very important role. The second purpose is to assist the teaching of biological specimens, Chinese idiom called Seeing is believing seed specimens, such as the tiger would like to introduce it, the effect is certainly better to use language to describe the Tigers take samples to explain more is understood, the better. The third role is as a biological crafts for people to watch, buy. Herbarium customization, Jinan plant specimens, teaching voyage by voyage Teaching Equipment Co., Ltd. Xinxiang City. Xinxiang City voyage Teaching Equipment Co. (www.xxyuanhang.cn) (www.yuanhang369.com) strong, credible, in Xinxiang specimen model industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the voyage into the brilliant teaching and you work for a better future! You can also access (www.yuanhang369.com/supply_details_40314050.html), for more information about the company.