Ụlọ ọrụ Petroleum Well Control Equipment Co., Ltd. (PWCE)
Ụgwọ nke ụlọ ọrụ PWCE Express Oil and Gas Group Co.,Ltd.
Ụgwọ nke ụlọ ọrụ Seadream Offshore Technology Co.,Ltd.
Otu BOP accumulator unit (nke a makwaara dị ka ngalaba mmechi BOP) bụ otu n'ime ihe kachasị mkpa nke ihe mgbochi ikuku. A na-etinye ndị na-akwakọba na sistemu hydraulic maka ebumnuche nke ịchekwa ike a ga-ahapụ ma bufee ya na sistemụ mgbe ọ dị mkpa iji rụzuo ọrụ ụfọdụ. Ngalaba na-akwakọba BOP na-enyekwa nkwado hydraulic mgbe mgbanwe nrụgide na-eme. Mgbanwe ndị a na-emekarị na nfuli mgbapụta dị mma n'ihi ọrụ ha na-arụ nke ọnyà na ịchụpụ mmiri.