WorkVenture gives you an inside look at what it's like to work at Thrap Siam Lohakij Co., Ltd., office & team photos, reviews and more. This is the Thrap Siam Lohakij Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at Thrap Siam Lohakij Co., Ltd..Apply to BainisysApply to Draft BoardApply to บริษัทเวิอร์คสตัทApply to Phatra Securities PCL.