Chinese chemical tanker owner Nanjing Shenghang Shipping is scaling up its fleet renewal programme with plans to spend CNY994.8m ($148m) on six 13,500 dwt stainless-steel chemical and product tanker newbuildings. The Shenzhen-listed company has lined up China Merchants Shipbuilding Industry Group Nanjing Shipyard for the series, with each vessel priced at CNY165.8m ($24.7m), including tax. …