WorkVenture gives you an inside look at what it's like to work at O.K. Mass Co., Ltd., office & team photos, reviews and more. This is the O.K. Mass Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at O.K. Mass Co., Ltd..Apply to Smooth EApply to VT Thai GroupApply to TravelokaApply to WorkVenture Technologies