WorkVenture gives you an inside look at what it's like to work at C.o.s. Engineering Co., Ltd., office & team photos, reviews and more. This is the C.o.s. Engineering Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at C.o.s. Engineering Co., Ltd..Apply to TLC ThailandApply to ProlificApply to BonnyApply to WorkVenture Technologies