SHANGHAI, China (Sept. 13)—Shanghai Cabot Chemical Co. Ltd. will add more than 50,000 metric tons of annual capacity at its carbon black plant in Shanghai in 18 months at a cost of about $25 million. The joint venture between Cabot Corp. and Shanghai Coking Chemical Co. was created in 1988 and has been producing carbon black since 1992. The plant's capacity last was expanded to 70,000 metric tons in 1997-98. The expansion plan was announced at a celebration marking the venture's 10th anniversary attended by Shanghai government officials, customers and local community residents. "This new production unit will bring advanced carbon black manufacturing technology to our plant in Shanghai and enhance our ability to continue supplying the highest quality products for our customers in China," William Noglows, executive vice president and general manager of Cabot´s carbon black business, said in a prepared statement.