Section 2(b) in The U.P. Cotton Ginning and Pressing Factories Rules, 1964
(b)The special mark allotted to each factory shall consist of two letters denoting the State viz. "Uttar Pradesh" together with a number denoting the factory. The number denoting the factory shall follow the letters denoting the State.(ii)Manner in which bales shall be marked. - Each bale of cotton pressed in a cotton pressing factory shall be marked in the following manner:(i)The special mark and the serial number shall be in English figures and letters and shall be decipherable.(ii)The special mark and the serial number shall be punched on one or more of the hoops or stencilled on the hessian on the lashed side of the bale or may be both so punched and stencilled: Provided, however, that, if stencilled, such mark and number shall not be stencilled on an end hessian.
