Transtech Optelecom Science Holdings Limited, an investment holding company, engages in the manufacturing and sale of optical fiber in Hong Kong. It is also involved in the manufacture and sale of optical fiber cables, optical cable cores, rodent resistant optical fibre cable, flame-retardant optical fibre cable, non-metallic optical fibre cable, power cable, and other related products. The company offers optical fiber for use in telecommunication, medical, military, aerospace, and various other applications; and optical fiber core and other related products, such as optical fiber coloring, secondary coating, and stranded cabling, as well as the tests. It has operations in the Hong Kong, Thailand, Germany, Indonesia, Myanmar, Malaysia, the Philippines, Seychelles, United Kingdom, Laos, Greece, and internationally.