Rebecca Liebert doesn't worry much about China. It doesn't concern her, for instance, that China makes a relatively small contribution to her business's global portfolio today. UOP, a subsidiary of U.S.-based Honeywell International Inc., sells technology used in various parts of the natural-gas value chain. China has explicitly stated its intention to use more gas. And so, even though China has yet to tap its gigantic shale reserves, Liebert and others see a large market in the making.