NLSC opens the 1:5,000 reference frame index data to the public.
1. National Land Surveying and Mapping Center（NLSC）provides the 1:5000 reference frame index data sets contain the kind of the TWD97 coordinate zone 119, zone 121 and zone 123, which vector data suitable for overlay query and mapping such as "Taiwan e-Map", "Land Use Investigation data" and "Orthophoto".
2. Additionally, NLSC provides 2 data sets of the organization chart and contact information involve sections, offices and survey teams, which reveal the structure, functions, locations and contact information of NLSC.
3.For more details about the aforementioned ones, please available for access to the following websites：
(1) Taiwan Map Store（https://whgis.nlsc.gov.tw）
(3) MOI Open Data（https://data.moi.gov.tw）