WorkVenture gives you an inside look at what it's like to work at Sanmunkong Engineering Co., Ltd., office & team photos, reviews and more. This is the Sanmunkong Engineering Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at Sanmunkong Engineering Co., Ltd..Apply to JK HerbsApply to I.P. TradingApply to CharungkijApply to vanda apartment