[introduction] certificate npt (dalian) is a certificate authorized by the american society of mechanical engineers (asme). since january 2008, cfhi has obtained the asme nuclear equipment manufacturing certificate, and established the asme nuclear power product manufacturing quality assurance system according to asme nqa-1 and asme section iii, division nca. the application scope of this certificate covers the manufacture of class 1, 2, 3, cs and mc nuclear components without design responsibility, the manufacture of accessories with design responsibility, and the supply of ferrous-based and non-ferrous materials. the renewal period of this certificate is 3 years. this certificate authorizes cfhi to manufacture parts and provide materials for nuclear power products in accordance with the requirements of asme standards and quality system according to the specified scope. this manufacturing qualification is maintained continuously since it was obtained.