Along with the years of entrepreneurial journey of Zhongyuan people, she gradually formed her own spiritual pillar and behavioral norms. In the silent inheritance, she guided Zhongyuan Company towards a more brilliant tomorrow.
NOM W124 Copper and copper alloys products-connections and pipelines-pneumatic test
NOM W123 Copper and copper alloys products-connections and pipelines-hydrostatic test
NOM W028 Lead,cadmium and zinc pipes-test method
NOM W019 Tube-brass
NOM E145 Plastic industry-PVC piping unplasticized poly (vinyl chloride)(PVC)pipes for pressure water supply- english series -specifications
NOM D037 Seamless steel fuel injection tubes used in the automotive industry
NOM C340 Building industry -prestressed concrete pipes-water sampling for analysis and evaluation of potentially agresive parameters to the pipeline
NOM C028 Different forms to expand automotive tubing
NOM C012 Fiber reinforced -Cement -Pressure pipes-specifications
NOM B210 Steel tubes for the protection of electric cables (conduit)-light and semi-light type
NOM B209 Steel tubes for the protection of electric cables(conduit)-semi-heavy type
NOM B208 Steel tubes for the protection of electric cables (conduit)-heavy type
ADD：Chengnan Industrial Development Zone, Yanshan County, Hebei Province
Domestic phone number：0086-317-6689999
International call：0086-317-6165555
E-mail:9905791@qq.com
