Bayer Corporation, Pittsburgh, PA, has expanded the list of e-business options available to its polymers and chemicals business customers to include eXtensible Mark-up Language (XML) transmissions for receiving and processing customer purchase orders.      According to Bayer, XML offers numerous benefits, including the ability for customers to establish a direct business to business link to the company while ensuring access to all of the customizable functions of the BayerONE online e-busines...