Jun 17, 2008. /Lesprom.com/. ASPI (Association of Suppliers to the Paper Industry) announced that Colleen Walker has joined ASPI as Director of Member Relations. Previously, Walker was Associate Director for Industry Liaison at CPBIS (Center for Paper Business and Industry Studies). She also worked for Westvaco and Tenneco Packaging, primarily involved in new product development efforts and business development. ASPI is a non-profit association of member companies that supply a range of products and services to paper producers.