高强度mns绝缘柱绝缘子批发mns20绝缘子mns30绝缘子mns40绝缘柱mns50绝缘柱Application: communication, electric power, lightning protection, machinery, medical, wind energy, frequency conversion equipment,new energy vehicles (integrated chassis cabinets, locker, etc.) Advantage:high intensity electrical resistance heat,fire,water resintance |