The marine mollusk of the Trochidae family, with its short, conical shell truncated at one end. Although it ranges from the intertidal zone to the deep sea, the most diverse species are found in the shallow waters of the rocky shores from the equator to the high latitudes. Gibbula, Monodonta, and Lilium are common in the temperate regions of the Atlantic coast. Calliostoma. Gastropoda (Prosobranchia) Trochidae marine molluscs, with a low-conical shell truncated at one end. Although it ranges from the intertidal zone to the deep sea, the most diverse species are found in the shallow waters of the rocky shores from the equator to the high latitudes. Gibbula, Monodonta, and Lilium are common in the temperate regions of the Atlantic coast. Calliostoma. There are a large number of genus Tegula and genus genus in the Pacific Ocean. Tropical species such as Trochus, Tectus, and Cittarium are often larger and brighter than other species. Most species are herbivorous and feed on algae or spore layers on rock surfaces. Dioecious, in vitro fertilized, most have free swimming larvae. There are pearl layers inside. The largest species is the Trochus niloticus in the Indian Ocean and Pacific Ocean. It has been heavily fished in the past and used its shiny pearl layer to make buttons. Zhongluo is the largest and heaviest in shape, with an almost equilateral triangle. Most of the spirulina are generally smooth except for some fine twills. There are tubular nodules in some of the shellfish and all of the pupules, and some form grooves in the shallow sutures. There are ridged teeth on the screw shaft. The shell is pale pink and white, with dark red wide diagonal stripes. (Note: Once used to make buttons, there are still a few of them used to make decorations.) Horseshoe is one of the main marine economic shellfish in the South China Sea belonging to mollusks, gastropods, and horseshoe snails. Compared to other pearl shells, the nautilus shell nacre is thick and has a very good pearl luster, and is currently mainly used for decoration. A variety of trace organic compounds were detected in the nacre powder from horseshoe snails. The presence of these trace organic substances may have a certain influence on the pharmacological effects of pearls on nacre powder. The acid-insoluble protein of the horseshoe-shaped nacre powder contains 18 kinds of amino acids and contains 8 kinds of essential amino acids required by the human body. Trace inorganic elements analysis found that horseshoe snail nacre powder containing Mg, Fe, Zn, Se and other beneficial elements of the human body, but also contains As, Cd, Pb, Hg and other harmful heavy metal elements, it is worth noting when used. Want to learn more about buttons: accessible For more details, please pay attention to WeChat public number: aritifical leather, synthetic leather, pvc leather, pu leather, expended vinyl, sponge vinyl Pvc Leather,Artifical Leather,Synthetic Leather,Pvc Sponge Leather Vigor Plus Co., Ltd , https://www.vigorplusx.com