Pt. surrama tridaya mandiri is a distributor of valves and instruments in jakarta, indonesia. they offer a wide range of products, including flowmeters, gas detectors, control valves, safety valves, pressure reducing valves, and more. they also provide services such as automation, servo drives, programmable logic controllers, and industrial communication. additionally, they have a variety of accessories, including electrical components, heat exchangers, and air coolers. the company also offers a range of gas detectors, including portable and fixed detectors, as well as sample gas pumps and conditioning systems.