Hebei Rubang Carbon Products Co., Ltd. e hiwere na August 2014 na a aha isi obodo nke 25 nde yuan. Site na isi ụlọ ọrụ dị na Cheng 'County, ógbè Hebei, nke a maara dị ka "North China Carbon Base", O nwere ndị enyemaka abụọ: Hebei Rubang Carbon Products Co., Ltd Panzhihua Alaka ụlọ ọrụ na Handan Damai Carbon Co., Ltd.