National identification number "Teudat Zehut"), bearing an Identity Number, is issued to all residents over 16 years old who have legal temporary or permanent residence status, including non-citizens. Japan's national identification number system, known within the country as "My Number" (Japanese: マイナンバー), went into effect from 2016. The number consists of 12 digits, and one is assigned to each resident of Japan, including non-Japanese long-term residents with valid residency permits. In Kazakhstan there is a 12-digit Individual Identification Number for natural persons (abbreviated in , "ZhSN"; in , "IIN", with first six digits representing person's date of birth in the YYMMDD format) and
Resin casting is a copolymer. Copolymers contain two different alternating chemical entities in the final polymer molecule. Most commonly a thermosetting resin is used that polymerizes by mixing with a curing agent (polymerization catalyst) at room temperature and normal pressure. The resins are named by analogy with plant resins, but are synthetic monomers for making polymer plastics. The so-called synthetic resins used include polystyrene resin, polyurethane resin, epoxy resin, unsaturated polyester resin, acrylic resin and silicone resin. Epoxy resin has a lower viscosity than polyurethane resin ; polyester resin also shrinks markedly while curing. Acrylic resin, in particular the methyl methacrylate type