Nihon Fain Seramikkusu Kyōkai
Heisei 17-nendo sozai sangyō gijutsu taisaku chōsa (muki shinsozai sangyō no gijutsu taisaku chōsa kenkyū)- Heisei 2-nendo muki shinsozai sangyō taisaku chōsa (nyū daiyamondo sangyō taisaku chōsa kenkyū) itaku chōsa kekka hōkokusho
- Heisei 2-nendo muki shinsozai sangyō taisaku chōsa (zairyōbetsu mondaibetsu chōsa kenkyū) itaku chōsa kekka hōkokusho
- Heisei 3-nendo muki shinsozai sangyō taisaku chōsa (zairyōbetsu mondaibetsu chōsa kenkyū) itaku chōsa kekka hōkokusho
- Heisei 4-nendo muki shinsozai sangyō taisaku chōsa (nyū daiyamondo sangyō taisaku chōsa kenkyū) itaku chōsa kenkyū hōkokusho
- Heisei gannendo kōzōyō fain seramikkusu no hoshō shiken o fumaeta shinraisei sekkei ni kansuru chōsa kenkyū
- Heisei gannendo muki shinsozai sangyō taisaku chōsa itaku chōsa kekka hōkokusho
- Muki shinsozai sangyō taisaku chōsa (nyū daiyamondo sangyō taisaku chōsa) itaku chōsa kenkyū hōkokusho
- Muki shinsozai sangyō taisaku chōsa (zairyōbetsu mondaibetsu chōsa kenkyū) itaku chōsa kenkyū hōkokusho
- Shōwa 61-nendo fain seramikkusu sangyō taisaku chōsa (zairyōbetsu mondaibetsu chōsa kenkyū) itaku chōsa kekka hōkokusho
- Shōwa 63-nendo muki shinsozai sangyō taisaku chōsa (nyū daiyamondo sangyō taisaku chōsa kenkyū) itaku chōsa kekka hōkokusho
- Shōwa 63-nendo muki shinsozai sangyō taisaku chōsa (zairyōbetsu mondaibetsu chōsa kenkyū) itaku chōsa kekka hōkokusho