They will be executed by lethal injection in the city of Kunming in southwest China's Yunnan Province, the Kunming Intermediate People's Court said.
Naw Kham's three accomplices were identified as Hsang Kham from Thailand, Yi Lai (stateless) and Zha Xika from Laos.
After the court rejected their appeals and withheld the death sentence, their sentences were submitted to the Supreme People's Court (SPC) in Beijing for review.
The Kunming Intermediate People's Court received a judgement regarding the judicial review, as well as the execution order on February 22.
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The convicts were informed of the judgement on February 24.
The execution will be supervised by the Kunming People's Procuratorate.
The court has already arranged for the consulates of Thailand and Myanmar in Kunming, as well as the convicts' relatives, to meet with the convicts.
The court has also ensured their litigation rights.
After the execution, the court will hand over their remains, wills and personal belongings to their relatives or relevant consulates.