优点：

一采用AS进口塑料，可带吊卡(AS the imported plastic, can bring condole card)

二批杆是纯工具钢，嘴为冲压加工 (Batch of stem is pure tool steel, the mouth for stamping processing)

三氖泡可测试30000次以上。( neon bulb can test of 30000 or more)