型号列举：
PC21LT-0
PC21MT-0
PC21LT-(1-4)
PC21MT-(1-4)
PC151LT-0
PC151MT-0
PC151HT-0
PC151LT-(1-4)
PC151MT-(1-4)
PC151HT-(1,3,4)
PC301LT-0
PC301MT-0
PC301HT-0
PC301LT-(1-4)
PC301MT-(1-4)
PC301HT-(1,3,4)
PCCFLT-0
PCCFMT-0
PCCFHT-0
PCCFLT-(1-4)
PCCFMT-(1-4)
PCCFHT-(1,3,4)
PCM21LT-0
PCM21MT-0
PCM21LT-(1 to 5)
PCM21MT-(1 to 5)
PCM151LT-0
PCM151MT-0
PCM151HT-0
