... carton Price Factory direct price 1). E40 lamp holder, lamp holder bracket, ceramic E40 lamp holder 2). E40 series 3). European standard, meet ... a professional maufacturer for E27/E39/E40 porcelain/ceramic lamp holder & insulators and exporter of electrical goods ( such as other ... factory.Our factory is one of the biggest porcelain lamp holder factories in our end Fujian Province, located in Yongtai, ...