EPSG:2370

WGS84 Bounds: 73.6200, 35.8100, 76.5000, 40.6400 var bounds = new OpenLayers.Bounds(73.620000000000005, 35.810000000000002, 76.5, 40.640000000000001);
Projected Bounds: 375272.4380, 3965341.5996, 635574.1937, 4501679.1700
Scope: Large scale topographic mapping, cadastral and engineering survey.
Last Revised: July 22, 2006
Area: China - 73.5°E to 76.5°E

Xian 1980 / 3-degree Gauss-Kruger CM 75E (Google it)