Sinoma Int. (Tianjin) started the certification for its pressure pipe design from February. During the certification process, all relevant departments cooperated with each other. Various works were completed successfully, such as research plan, design staff selection, quality system establishment, occupational training and examination, design document preparation and drawing revision, etc. On June 27th and 28th, Tianjin Bureau of Quality and Technology Supervision gave its approval after on-site inspection.