Here are the directions to Golden Rule. Head Office / Research Center / Measuring Instrument Factory 1 Songdo BRC Smart Valley Knowledge Industry Center #1805, 30 Songdo Mirae-ro, Yeonsu-gu, Incheon Tel. 070 - 7005 - 9672 ~ 3 Sales Department/ Business Department #1202, Building E, Knowledge Industry Center, BRC Smart Valley, 30 Songdo Mirae-ro, Yeonsu-gu, Incheon Tel. 032 - 817 - 1240 Fax. 032 - 817 - 1250 2nd measuring instrument factory 187, 9, Techno 2-ro, Yuseong-gu, Daejeon Tel. 070 -7878 -6176 ~ 7 Medical equipment / sports equipment 3 factory 30, Gongdan-daero 190beon-gil, Uiwang-si, Gyeonggi-do Tel. 070 -7005 -9674 ~ 5