GlobalNetXchange (GNX), the retail industry exchange serving both retailers and manufacturers, yesterday announced the commercial launch of its Collaborative Product Development (CPD) solution, a workflow and specification management tool for private label grocery products. Developed in association with Sainsbury's Supermarket's and QSA, the GNX CPD solution provides grocery retailers with a workflow tool for managing the entire product development cycle - from concept to store shelf - for private label items.