市内通信电缆：大对数；HYA22

HYA（5-2400对） HYAT（5-2000对） 
HYA53 （5-300对） HYAC（5-300对） 
直埋于地下电缆HYAT53大对数电话线HYA HYAT53系列 HYAHYAT53 
大对数电缆室外电话线HYAT53 HYA HYAT53HYA
市内通信电缆：大对数；HYA22 ZRC-HYA ZRC-HYAT ZRC-HYAT23 HYV22 PYV22 
WDZ-HYAT    100*2*0.5    100*2*0.6
WDZ-HYAT   50X2X0.5    100X2X0.6
WDZ-HYAT   50X2X0.4    100X2X0.4
WDZ-HYAT   3000X2X0.5    600X2X0.6
HYAT   50X2X0.5    100X2X0.6
HYAT53   20X2X0.5    200X2X0.6
HYAT23   30X2X0.5    300X2X0.6
HYAT22   40X2X0.5    400X2X0.6
HYAT23   30X2X0.4    300X2X0.4