Changsha Joinway Mining Co., Ltd is one of subsidiary companies of Hunan Kingstone (Group) Co., LTD, which is authorized to sell all the products branded"kingstone" . Our group includes one smelting factory, one zinc powder factory and one sales company. Its has its own mining area of zinc. The annual output of zinc ingot is 75,000 tons and zinc powder is 4,000 tons. Our product hasenjoyed great population both here and abroad. Especially, zinc powder is widely used in the area of painting, agriculture and medical. More that 70% of zinc powder is exported to many countries and districts of the world.
