UK Holdings Ltd. Milton Keynes (UK) 100.00 Evonik United Silica Industrial 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 (