… slag mixed with an accelerator and calcined gypsum), pozzolana cement, Roman cement, etc., and mixtures of the … cement (alumed plaster gypsum) ( heading 25.20 ), and pozzolana earth, santorin earth and similar substances, …
… Degradable Plastic ( ED). The material drips out of a nozzle and is then hardened by a UV light. (4) Material … extrusion machines heat filaments inside an extrusion nozzle that moves in a vertical and horizontal motion, …
