PT Grand Kartech Tbk, an engineering and manufacturing company, engages in the design and building of equipment and machinery in Indonesia. The company offers boiler products, such as fire tube boiler under the Hoken and Primatron brands; water tube boiler; once through boiler under the SAMSON brand; coal boiler; biomass boiler; and packaged hot water boiler under the Pyronette and EMR brands, as well as heat recovery system generators, thermal oil heaters, and boiler equipment. It also provides products for oil and gas processing, such as separation, gas sweetening, glycol dehydration, pump skid, chemical injection skid, and fired heater; and bare equipment, such as pressure vessel, shell and tube heat exchanger, and storage tank. In addition, the company provides customized machinery for explosive emulsion mining plant, automotive painting plant, mixing equipment, heating equipment, material transfer equipment, jigs, and general works; and products for fired heaters, CO2 absorber plants, waste heat recovery units, power generation water tube boilers, and organic rankine cycle. Further, it offers services under DoctorBoiler name, such as boiler rental, fire tube boiler service, water tube boiler service, combustion management and boiler system, troubleshooting and inspection, boiler and burner recondition, fuel conversion, cooling tower water treatment, piping, contract service, training, water treatment and chemical supply, energy audit, and spare part, as well as valve repair and testing, modifications, reconditioning, design and manufacture, and product selection services under the Valve-Retro. It serves chemical engineering, mechanical engineering, electrical and instrumentation, and information technology industries. The company was founded in 1990 and is headquartered in Jakarta, Indonesia. PT Grand Kartech Tbk is a subsidiary of PT Sutardja Dinamika Cipta.