Pin insulator ຍາວ Shank spindle11kv ແຮງດັນຕ່ໍາ pin ceramic insulator pot with pin spindleSpindle ໂຮງງານຜະລິດໂດຍກົງສໍາລັບ AS ມາດຕະຖານ Pin InsulatorsP-11-Y 11kv insulator Pin type porcelain insulator with spindle for high voltage.