6. Five series of products includes more than ten varieties, including cup pig series, straight plate pig series, paraffin scraper series, foam pig series, flexuosity detector series, etc.

• 皮碗清管器系列；直板清管器系列；刮蜡清管器系列；泡沫清管器系列；屈曲探测器系列等五大系列几十种产品。收藏指正