WorkVenture gives you an inside look at what it's like to work at Siam Modular Switchboard Co., Ltd., office & team photos, reviews and more. This is the Siam Modular Switchboard Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at Siam Modular Switchboard Co., Ltd..Apply to NumbernationApply to PSP SealingApply to Ministry of InteriorApply to TT Network