empanelment to supply table top stem kits pan india -- 3d shapes model, (set of 3d nets, 21, shapes), 60mm refractor, telescope making, kit, acid base, experiments tlm, angle between, mirrors model, animal cell model, archimedes screw, model, area formulas, chart- triangle 1 &, 2 (50 nos.), area formulas, chart chart- circle, & parallelogram, (set of 50), area formulas, chart- rhombus &, trapezium (set of, 50), atomic model set -, junior, atomic model set -, senior, brachistochrone, model, celes.....