the silky filaments or byssus secreted by a gland in the foot of pen shells. silk is an animal textile made from the fibres of the cocoon of the chinese silkworm which is spun into a smooth fabric prized for its softness. there are two main types of the silk: 'mulberry silk' produced by the bombyx mori...
their distillation; bituminous substances; mineral waxes section- chapter ( to ) section vi - products of the chemicals or allied industries chapter chapter description chapter- inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements of isotopes...
materials products for acoustic insulations cementitious and resin floor coverings products for building products for wooden floors admixtures for concrete products for structural strengthening products for masonry restoration products for thermal insulation wall protective and decorative coatings products...
materials products for acoustic insulations cementitious and resin floor coverings products for building products for wooden floors admixtures for concrete products for structural strengthening products for masonry restoration products for thermal insulation wall protective and decorative coatings products...
materials products for acoustic insulations cementitious and resin floor coverings products for wooden flooring products for building admixtures for concrete products for structural strengthening products for masonry restoration products for thermal insulation wall protective and decorative coatings...