... the company has many quality certificates include UL,CQC,KEMA,VDE etc. Now the company is well known ... lampholder,e26 porcelain lampbase,porcelain lamp holder , porcelain lamp base,e26 porcelain lamp holder,e26 porcelain lamp base,ceramic lampholder, ceramic ... lampholder,e26 ceramic lampbase,ceramic lamp holder,ceramic lamp base,e26 ceramic lamp holder,e26 ceramic lamp base,light holder, light base ...