MIC (Ministry of Internal Affairs and Communicarions)
http://www.soumu.go.jp/english/

JATE(Japan Approvals Institute for Telecommunications Equipment)
http://www.jate.or.jp/index-e.html

TELEC(Telecom Engineering Center)
http://www.telec.or.jp/ENG/Index_e.htm

ARIB(Association of Radio Industries and Businesses)
http://www.arib.or.jp/index_English.html

CIAJ(Communications Industry Association of Japan)
http://www.ciaj.or.jp/ciaj/welcome.html

JAB(The Japan Accreditation Board For Conformity Assessment)
http://www.jab.or.jp