WorkVenture gives you an inside look at what it's like to work at Grand Hiso Group Co., Ltd., office & team photos, reviews and more. This is the Grand Hiso Group Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at Grand Hiso Group Co., Ltd..Apply to T.C. PharmaApply to Wongnai Line ManApply to Infinity GrandApply to Boots