WorkVenture gives you an inside look at what it's like to work at Marui Sum (Thailand) Co., Ltd., office & team photos, reviews and more. This is the Marui Sum (Thailand) Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at Marui Sum (Thailand) Co., Ltd..Apply to Thai Swedish ChamberApply to AIRCOApply to VitaboostApply to WV