WorkVenture gives you an inside look at what it's like to work at O.P.N. Intertrade Engineering Co., Ltd., office & team photos, reviews and more. This is the O.P.N. Intertrade Engineering Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at O.P.N. Intertrade Engineering Co., Ltd..Apply to Ayudhya CapitalApply to Business CtsApply to AISApply to Enza Zaden