... CentigradeRoHS CompliantISO 9001:2008 standardSGS Founded in 2000 in shenzhen,China, Shenzhen Yulongtong Electronics Company is a leading manufacturing enterprise specialized in the ... , Mismatch terminations, Coaxial Attenuators, Variable & Step Attenuators used in medical electronics, wireless communications infrastructure, defense, aerospace and satellite communications markets. As ...