(ultra-high anti-rust high wear-resistant type（AA）&general anti-rust high wear-resistant type（A))
6-axis 5-linkage CNC grinding center, super-sharp cutting edge super-hard finish grinding profiling.
1. Super-high anti-rust high wear resistance stainless steel series(AA)(regularly stock)
Grooves of any length, width and depth can be made as required.
cranial bone Any of the bones surrounding the brain, comprising the paired parietal and temporal bones and the unpaired occipital, frontal sphenoid, and ethmoid bones.A bone of the skull or intelligence case.
Skull, the skeletal structure of the head, composed of the facial and cranial bones. The cranium houses and protects the brain and most of the chief sense organs; i.e., the eyes, ears, nose, and tongue. Among humans, some 14 bones form the face, most going on in symmetrical pairs. They are the lacrimals at the inner aspects of the eyes, the nasals and nasal conchae of the nose, the palatines (palate), the zygomatics, or malars at the cheeks, the vomer (nasal septum), and the maxillae, or upper jaw. The mandible, or lower jaw, is not technically part of the skull. The adult human cranium, or braincase, is shaped of fused cranium bones: the parietals, temporals, ethmoid, sphenoid, frontal, and occipital. These are separate plates of bone in the fetus, but by way of beginning they have usually grown sufficiently for most of their edges to meet. The final separations are recognized as fontanels, the most prominent being the smooth spot atop a newborn's head. By the age of two years, all of these fontanels have been closed over with the aid of the developing cranial bones. However, the seams, or sutures, between the bones do now not definitely knit until the age of 20. The occipital bone at the base of the skull types a complex joint with the first vertebra of the neck, recognized as the atlas, allowing rotation and bending of the head. Study of the fossil skulls of people and their precursors has made important contributions to evolutionary theory, and to the science of bodily anthropology. Earlier skulls of human ancestors, for instance, have been shown to have markedly smaller cranial capacities, as nicely as more effective jaws, than do the Homo sapiens species which exist today.