137cs active ceramic core is sealed in the doubly encapsulated stainless steel container by ar-arc welding.the usage is oil well logging，thickness gauge, level gauge, density gauge, nuclear scale.
china isotope & radiation corporation (circ) is the holding subsidiary of china national nuclear corporation(cnnc) and the largest nuclear enterprise in the aspects of research and development, manufa...
cs-137 γsource
time:28 february 2022