the eight parts are: part a: life needs; part b: homework; Transport part c: chemistry; Metallurgical department d: textile; Papermaking part e: fixed building part f: mechanical engineering; Lighting; Heating; Blasting part g: physiCal part h: electricity

in part c, each chemical element group is defined as follows: alkali metal: Li, Na, k, Rb, Cs, Fr alkaline earth metal: ca, Sr, Ba, Ra lanthanide: rare earth metal with atomic number 57 to 71: Sc, y, lanthanide actinide: atomic number 89. W hAlogen: f, Cl, Br, I, At iNert gas: He, ne, Ar, Kr, Xe, Rn platinum group metal: Os, Ir, Pt, Ru, Rh, Pd precious metal: Ag, Au, platinum group metal light metal: alkali metal, alkaline earth metal, Be, al, Mg heavy metal: iron group metal except light metal: Inert gas, halogen metal: transition elements other than nonmetal: elements with atomic numbers of 21 to 3, 39 to 48, 57 to 8, 89 or more. Part C includes: a. Pure chemistry, including inorganic compounds, organic compounds, polymer compounds and their preparation methods; B applied chemistry, including compositions containing the above compounds, such as glass, ceramics, fertilizers, plastic compositions, coatings, and petroleum industrial products. It also includes some compositions suitable for some purposes because of their special properties, such as explosives, dyes, adhesives, lubricants and detergents; C. Some marginal industries, such as coke manufacturing, solid fuel or gaseous fuel manufacturing, production and refining of oil, grease and wax, fermentation industry (such as brewing and wine making) and sugar industry; D some operations or treatments, which are either purely mechanical (such as mechanical treatment of leather and hides) or partially mechanical (such as water treatment or general corrosion protection); E. metallurgy, black alloy or non-ferrous alloy.