to this day, we have passed iso9001 quality management system certification, and established a whole-process system that involves r & d, purchase, production, design, inspect, and after-sales services, etc.to efficiently carry out quality and environment management activities and provide ship owners with eligible and satisfying products,we have instituted the quality /environment management manual and a complete set of procedure documents and flow management documents, which cover all work in relation to r & d, purchase, production, operation, and after-sales services, etc. so far, all of our products have passed inspection and accreditation of classification societies include abs, bv, ccs, dnv, and lr.