WorkVenture gives you an inside look at what it's like to work at T.C.H. Suminoe Co., Ltd., office & team photos, reviews and more. This is the T.C.H. Suminoe Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at T.C.H. Suminoe Co., Ltd..Apply to CrossmaxApply to WEApply to MetroApply to WorkVenture Technologies