APS is particularly strong in supplying wind power internal structures in towers. Our internal structures cover towers for GE, Vestas Wind Systems, Nordex, Clipper, and Suzlon. We supply about 600 different components for each tower, and we are capable to take an order for even one tower without charging any tooling fee. Our welding workers are certified according to AWS D1.1. APS is proud to be one-stop supplier for complicated tower internal structures.