Zhejiang Hongda Chemicals Co.Ltd occupies more than 66,600 square meters. Our company engages in Optical Brighteners and textile printing dyeing for more than 20 years and accumulates large experience. The company now owns many certificates, such as ISO9002, which gained in 2000; ISO9001 and ISO14001, which gained in 2005. The company paid high attention to staff’s quality and development. Until 2007, more than 45% of staff were graduated from technical secondary school and university, and improved the company’s Comprehensive Strength Enhanced. The company owns many advanced equipments regarding to the research and development, such as IR dyeing machine, boarding machine, pad-dyeing machine, GC, HPLC and UV, etc. The company also communicates and cooperate many programs with certain nu..