Qingdao Hongtai Copper Co., Ltd. With registered capital RMB18, 000, 000 was established in March 1993. It mainly specializes in producing various copper tubes and annual production has got to 50, 000 metric tons. In 2011 the copper tubes annual sales reached to 40, 000 metric tons. Qingdao Hongtai Metal Co., Ltd. was registered in 1999. And plans to invest totally four continuous casting lines to expand the annual production to 45, 000 metric tons (continuous casting only). Qingdao Hong