If you are familiar with the common iron wire nail, concrete steel nails, galvanized roofing nails, chipboard screw, wood screws, self-tapping screws, self-drilling screws, nuts, and bolts manufacturing industry, you will agree that the industry has benefited from improved industrial production and construction activity over the last two decades.
Profit of generic fastening products has been falling due to standardization, with increasing competition from low-cost, low-priced common iron wire nails in China and elsewhere, So we better set up nail making factories, produce local, then sell to market directly with higher profit.
The Nails, Screw, Nut, and Bolt Manufacturing industry is indeed a large industry and pretty much active in most countries of the world, especially in the United States of America, Taiwan, Japan, China, Germany, and India.
One report said that the location of nail manufacturing industry establishments is generally influenced by their proximity to upstream industries and to major markets. The report further stated that nail manufacturing establishments also tend to be highly correlated with population density.