Ningxia Darong Chemicals & Metallurgy Co,. Ltd. was founded in 1984. It has rounded into a large scale Group after 20 years of continuous development. Darong is dedicated to developing core business of chemicals and extending its business into the fields of foods, farm products processing, travel services, etc. more than twenty products are being manufactured in the factory. it is the biggest manufacturer of Cyanamide series products in Asia and is the second biggest one in the world.