Teo Hong Silom Co., Ltd., Ltd.'s mechanical & electrical business is inherited and passed down from its associated company, Worachak International Co., Ltd. With its strength and market trust as today to serve as a major provider of install and supply of mechanical, electrical, plumbing and fire protection systems for commercial buildings, industrial factories, residential condominiums or apartments, hotels, hospitals as well as government projects.

With this mechanical & electrical systems' business, Teo Hong Silom Co., Ltd. Strike to achieve the well respected and trustworthy of the public by creating the best engineering services with better technology as well as with a mission as a "One-Stop" integrated systems engineering solutions that count.