Industrial activities are responsible for only a tiny portion of Comoran economic activity --about 5% of GDP in 1994. Principal industries are those that involve processing cash crops for export : preparing vanilla and distilling ylang-ylang into perfume essnce. These activities were were once controlled by French companies, but as they closed unprofitable plantations, individual farmers set up many small, insufficient distilleries.Comorans also produce handicrafts for export. Other industries are small and geared to internal markets : sawmills, printing, carpentary, and the production of shoes, plastics, yogurt,handicrafts (such as jewellery exchanged as part of the grand marriage), and smalll fishing boats. Several factors provide major obstacle to the growth of industry : the islands geographically isolated position,their distance from each other, scarcity of raw materials and skilled labors, and the high cost of electricity (energy is produced by hydropower , imported petroleum, wood products) and transportation. Value added in industryslowly declined through the 1980s.
During Abdallah regime Comoran industry was tourism.About 100 hotels were available in the island.Galwa Beach being closed, tourism increased from 7,627 in 1990 to 16,942 in 1991.Most of them were European Specially French.
As of 2006, the mineral inustry of continued to be limited to the production of such construction materials as clay, sand, and gravel and crushed stonesfor local consumption. The demand for cement , steel, and petroleum products was met through imports; in 2005, imports of petroleum products accounted for 12% of total imports; cement 8%, iron and steel, 4%, . Import of cement amounted to 55,867 metric tons,petroleum products, 20,487 t; iron and steel, 3,678 t.