WorkVenture gives you an inside look at what it's like to work at Usaw. Wattanayont Co., Ltd., office & team photos, reviews and more. This is the Usaw. Wattanayont Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at Usaw. Wattanayont Co., Ltd..Apply to I StepApply to TCG PetrochemicalApply to PapermoreApply to Ramayana