Dongguan Defond Defoamer Co., Ltd located in the south of china, which is famous for its high-tech and rapidly growing up. Defond is an innovative technology company that integrates the research, development, production, and sales of defoamers. Based on technological innovation, Defond persists in research and development for 15 years. We have strong financial strength, having 5 doctor engineers and 31 engineers in the R&D team, we have research laboratory for ourselves and cooperate with Tsingh