WorkVenture gives you an inside look at what it's like to work at INTERNATIONAL TESTING SERVICE Co., Ltd., office & team photos, reviews and more. This is the INTERNATIONAL TESTING SERVICE Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at INTERNATIONAL TESTING SERVICE Co., Ltd..Apply to MK RestaurantApply to RethinkingApply to Posco Coated Steel ThaApply to Giztix