Zhejiang GuoGuang Technology Group is a leading manufactuer of biochemcal in China.Our factory is located in Quzhou city, occupies an area of 130 hectares and owns RMB 70 million of fixed assets.Nowadays we can yearly supply 6000t itaconic acid and 12000t feed grade L-threonine.Our company and products were certified by ISO9001 quality approval. And our feed grade L- Threonine is certified by HACCP FOOD SAFETY MANAGEMENT SYSTEM and FAMI-QS.