ndustrial Ltd. Taoyuan Hsien (Taiwan) 100.00 Evonik United Silica (Siam) Ltd. Rayong (Thailand) 70.00 Evonik Vietnam Limited Liability Company Ho-Chi-Minh City (Vietnam) 100.00 Evonik Wellink Silica (Napping) Co., Ltd. Nanping (China) 60.00 Insilco Ltd. GaJraula (India) 73.11 IIDA Evonik High Perform