Hong Jong-Hyun,

科學發明王. . 30, . 維持健康的發明 / by: 徐月珠,; Gomdori Co.; Hong Jong-Hyun, (Language materials, printed)

科學發明王. . 16 :. 創意發明學院 / by: Gomdori Co.,; Hong Jong-Hyun,; 徐月珠, (Language materials, printed)

科學發明王. . 17 :. 好發明新聞報 / by: Gomdori Co.,; Hong Jong-Hyun,; 徐月珠, (Language materials, printed)

科學發明王. . 18 :. 運動用品發明賽 / by: Hong Jong-Hyun,; 徐月珠,; Gomdori Co., (Language materials, printed)

科學發明王 .. 19 .. 網路直播大賽 / by: Gomdori Co.,; 徐月珠,; Hong Jong-Hyun, (Language materials, printed)

科學發明王 . 32 .. 保護地球大作戰 / by: Hong Jong-Hyun,; Gomdori Co; 徐月珠 (Language materials, printed)

科學發明王 . 31.. 防蚊發明品 / by: Hong Jong-Hyun,; Gomdori Co; 徐月珠 (Language materials, printed)