As leading sports equipment Manufacturer and Retailer we excel in delivering best in class cast iron valve box followed by top notch cast iron valve boxes. Located in Anshan, Liaoning, China we take pride in our technologically advanced production facility, boasting . Based on increasing demand in cast iron valve box and best quality of our cast iron valve boxes we have crossed annual revenue, owing to [over_all_export_marketshare] export market share reaching of export ratio. Anshan Dayang Metal and Machinery Co.,Ltd. holds 2020 Years of export history, established back in with initial business capital.