http://pastport.jp/user/earthrodchina ja-JP Ningbo Beisuda company is a professional manufacturer of grounding & earthing equipment. We specializes in manufacturing copper plated ground rod & earth rod, chemical ground rod, exothermic welding powder and Mould. 2020-01-13T16:49:02+0900 http://pastport.jp/user/earthrodchina/timeline/ningbo%20zhenhai%20beisuda%20petrochemical%20equipment%20co.%2Cltd earthrodchina http://pastport.jp/user/earthrodchina/timeline/ningbo%20zhenhai%20beisuda%20petrochemical%20equipment%20co.%2Cltd