Why some stocks are not traded on kite ?

Why stocks like SEYAIND and UEL not being traded on kite ? Below is the list of other stocks as well which are not traded on kite.

List of stocks present in bhavcopy but not in kite : 18 : {'PREMIER', 'BLUECOAST', 'VCL', 'QUINTEGRA', 'RADAAN', 'ANKITMETAL', 'NTL', 'UNIVAFOODS', 'GAYAHWS', 'GFSTEELS', 'SEYAIND', 'UEL', 'HINDNATGLS', 'MEP', 'VISASTEEL', 'FCONSUMER', 'JPASSOCIAT', 'SICALLOG'}