Ashland Specialty Ingredients will expand capacity at its Natrosol hydroxyethylcellulose (HEC) production facility in Nanjing by 4,000 metric tons, or approximately 40 percent, over the next 18 months. The four-year-old facility, which employs more than one hundred workers, is located within the chemical manufacturing complex Nanjing Chemical Industrial Park. Natrosol is a cellulosic polymer used as an additive in a…