IOS is a high-tech corporation dedicated to provide Advanced Planning and Scheduling (APS) and supply chain optimization solutions to selective discrete manufacturing industries such as apparel, electrical appliance and machinery industries. We also provide solutions on express mail logistics execution optimization.��IOS is a team with expertise on APS and optimization modeling. Some members of our core developing and consulting teams are experts with more than 10 years of experiences on APS development and implementation. As a dedicated and professional provider on APS, we help clients to improve their production planning and scheduling system, to minimize the delay and earliness of delivery, to minimize inventory and resource idle time with advanced technologies in mathematical modeling and optimization.