In China , HuaYao Group ( short for HY GROUP ) takes the leading role for resistors , we own 4  braches companies ： Shenzhen Huayao Precision Components , Dongguan Xinhecheng Electronic Technology , Huike Sensor Technology & Xingbao Technology . All of them located in South China , Now our manufacture line covers the whole supply chain for passive electonic components. Relying on the strong production and R&D capabilities , we passed ISO9001,ISO4001 , IATF16949 certification in 2022 .