WorkVenture gives you an inside look at what it's like to work at United Silica (Siam) Ltd., office & team photos, reviews and more. This is the United Silica (Siam) Ltd. Company Page. All content is posted anonymously by employees currently or previously working at United Silica (Siam) Ltd..Apply to Generali Life AssurancApply to URCApply to PlothausApply to WorkVenture Technologies