The Coast Guard Marine Safety Center issued the 44th U.S. Coast Guard Ballast Water Management System Type Approval Certificate to Jiangsu Nanji Machinery Co., Ltd. after a detailed review of the manufacturer’s type approval application determined the system met the requirements of 46 CFR 162.060. 
Source: USCG
Link: Marine Safety Center issues Ballast Water Management System Type Approval Certificate to Jiangsu Nanji Machinery Co., Ltd.