Yantai CIMC Raffles Offshore Ltd (YCRO) is one of the top 7 offshore construction shipyards in China as ranked by the government. The shipyard has specialized in building harsh environment semi-submersible drilling rigs as well as Jack Up rigs. Through the offshore experience of Norwegian rules and regulations, the shipyard is well-positioned to be a leading constructurer of large offshore fish farms. YCRO is part of the CIMC Group of companies. More details are available here: Yantai CIMC Raffles Offshore Ltd
It is intented to build Hex Box at Longkou Shipyard which belongs to YCRO. See pictures below.