The North American gold concentrate Dapeng Shengshi was successfully transported to China via the port of Busan in South Korea and transferred to the smelting company Shandong Jindu Smelting Co., Ltd. The United States pays attention to environmental protection.In accordance with the requirements of the US Federal Bureau of Land and Mineral Resources (BLM), Dapeng Shengshi Group has completed testing of the gold mine for a "non-polluting and environmentally friendly method of gold mining". The Government of California in the United States imposes strict requirements on mining companies regarding the registration of mining rights, mining and mine construction policies, mining deposits, environmental protection and a number of references have full legal protection. According to the rules of import and export of the US Customs Administration, copper, gold, silver ore and mineral powder are products allowed for duty-free export.