In addition to have engineer resources who are engaged in marine building, reclamation and underwater construction disciplines, PT. TBS human resources are also involved in the engineering and rehabilitation of biotic structures. Long experience in coral reef restoration projects, manufacture and installation of various structures and various substrate materials for coral reef restoration makes us a very experienced company in this field. Damage to coral reefs as one of Indonesia’s marine resources requires expertise and engineering of underwater materials and structures to restore underwater life, especially coral reefs. The team of PT.TBS experts has been heavily involved in rehabilitation projects with the government, corporations, and ship insurance companies, where ship accidents and ship waste spills have caused damage to the marine environment, especially coral reef ecosystems.