Our factory,HUNAN JINGSHI GROUP CO.,LTD. was founded in 1998 specialized in the production of zinc sulphate monohydratesilicone sealant and indium xxxxx company holds the registered capital of 5 million RMB and covers an area of 60000 square meters. Now it has the annual production capacity of 35, 000t zinc sulphate monohyadrate of Industry, feed grade and 40t indium ingot, one of the largest manufacturers of zinc sulfate in the world.Since its foundation, the company is rooted itself at international market and obtained self-support import&export rights in 1999 under the approval of State Foreign Trade Cooperation Ministry. Our products are well sold in China and popular in Europe, America, Oceania, Middle East and other countries and regions.