WorkVenture gives you an inside look at what it's like to work at Tri Engineering and Supply Co., Ltd., office & team photos, reviews and more. This is the Tri Engineering and Supply Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at Tri Engineering and Supply Co., Ltd..Apply to Dplus IntertradeApply to Chulalongkorn UniversiApply to The Navakij InsuranceApply to PTT