1950, Qingdao Daxin Vír Works, Heimilisfang: Shenyang Road, Qingdao, Kína
1967, endurnefna Qingdao Vír Works, Flutning endurreisn, Heimilisfang: Mið Shandong Road, Qingdao, Kína
1985, endurnefna Qingdao Cable Works, Factory stækkun
1995 Flutning endurreisn, Heimilisfang: No.243 Jia 308 Highway Qingdao, Kína
2000 RHH okkar Cable og THHN vír voru flokkaðar eftir UL
2011 Flutning endurreisn, Heimilisfang: No.16, Jifalongshan Road, Environmental Protection Industry Park, Jimo, Qingdao, Kína