Researchers at the National University of Saratov, Russia, used chitosan, which was mainly extracted from shrimp shells, to make new materials that can heal skin wounds faster. At the press conference on the 31st, Chief Physician Nikolai Ostrovsky stated that the new material consists of nanofibers, which can be made into very thin, band-like strips that are applied externally. Treatment of burns, frostbite and other skin injuries. Researchers also added drugs that promote rapid cell regeneration. Tests have shown that this new material can increase the speed of wound healing by 3 times, and it is not easy to leave scars. In addition, bandages made of this material will gradually ablate on the surface of the skin after application, and therefore do not need to be removed. At present, this invention has obtained relevant Russian patents and will soon be put into mass production. The development of nanofibers opens the door to the widespread adoption of new materials in the medical community. For example, Russian scientists intend to use this technology to manufacture masks that prevent inhalation of carbon monoxide during fires, and develop cigarette filters and disposable medical antibacterial sheets that significantly reduce tar levels. (Reporter: He Yingjun) Hexagon Socket Countersunk Head Bolts The hexagon socket countersunk bolts are also called flat cup hexagon socket bolts. They are generally made of English and metric systems, and are often made of stainless steel and carbon steel. The outer edge of the Screw head is round, and the middle is a concave hexagon. Its head is a 90-degree cone. After assembly, the screw head can fall into the assembly surface to keep the assembly surface neat. Countersunk hexagon socket bolts are often used on mechanical equipment, which are mainly beneficial to fastening, disassembling, and not easy to slip. Hexagon Socket Countersunk Head Bolts,Hex Socket Countersunk Head Screw,Socket Head Cap Scre,Countersunk Head Bolt Jiangsu Jiajie Special Screw Co., Ltd , https://www.jiajiescrewcompany.com