PepsiCo's hopes of resolving its difficulties with a Chinese partner have been dealt a blow when it emerged today that Sichuan Yun Lu Industrial, its joint venture partner, was filing for arbitration with a government trade body. Talking at a press conference Qu Zhidi, deputy general manager of the Sichuan Yun Lu Industrial Co said: ""We've officially filed an arbitration against Pepsi (China) Investment Co. before the China International Economic and Trade Commission."