Shade net nurseries for raising and hardening trees and ornamental plants. Multi-arch agricultural halls of all sizes and heights. Concrete ponds for fish farming. Ponds insulated with sheeting. Greenhouses for raising chickens. Normal arched greenhouses without air conditioning and cooling. Straight-sided greenhouses with and without air conditioning. Cattle and sheep pens. Greenhouses measure 40m long by 9m wide. Nurseries of all sizes and heights. Open pens for livestock with and without roofing. Insulated greenhouses for raising poultry, pigeons, and quails. Fish ponds and tanks with plumbing and oxygen equipment.