According to the document requirements of the credit work office under the Ministry of Commerce of the People’s Republic of China and the communication office of the industry associations under the State-Owned Assets Supervision and Administration Commission of the State Council, China Foundry Association started the second According to the document requirements of the credit work office under the Ministry of Commerce of the People’s Republic of China and the communication office of the industry associations under the State-Owned Assets Supervision and Administration Commission of the State Council, China Foundry Association started the second