Jiangsu Yinyang Gum Base Material Co., Ltd, which is the earliest and largest gum base manufacturer in China.With 19 years of experience in manufacturing gum base, we believe we have absolute advantage in competing with others. Our manufacturing base covers more than 33000 square meters, we mainly produce gum base, polyvinyl acetate (PVAC) and Styrene Butadiene Rubber (SBR) now. Our company has obtained cetifications of ISO9001-2000, HACCP and GMP. Right now we are in the process becoming a ...