日本HAYASHI林时计光纤LGC1-8L1000-R61

环形光纤：
LGB1-5L1000-R18, LGC1-5L1000-R18,

LGB1-7L1000-R31, LGC1-7L1000-R31,

LGB1-8L1000-R50, LGC1-8L1000-R50,

LGB1-8L1000-R55, LGC1-8L1000-R55,

LGB1-8L1000-R61, LGC1-8L1000-R61,