10) Silk Farming (cultivating silk worms) 11) Plantation or Tree Farming (long term development of timber) 12) Extensive Pastoral Farming (eg Hill Sheep Farming) You could argue that fish farming should be in the list, but that is generally considered to be a separate category.
Chromexcel is registered trademark for a kind of aniline leather with a history of production that goes back over a century in the US.
photocell. n. 1. (Electronics) a device in which the photoelectric or photovoltaic effect or photoconductivity is used to produce a current or voltage when exposed to light or other electromagnetic radiation. They are used in exposure meters, burglar alarms, etc. Also called: photoelectric cell or electric eye.