yes. China, India, Cambodia, Laos and Vietnam are the main countries of indo china.
Based on my research, Cambodia import all the necessary oil product from Singapore, Vietnam and Thailand. I hope this will help you for your further research.
China,Thailand, Laos, Cambodia and South Vietnam
Vietnam and Cambodia
LAOS is the only country that borders both Cambodia and Vietnam.
Cambodia and Vietnam are countries in southeast Asia. Cambodia is bordered by Vietnam to the east. Phnom Penh is the capital city of Cambodia. Hanoi is the capital city of Vietnam.
Philippines i think? --C0mrd3-- Cambodia, China, Thailand and Malaysia are closer to Vietnam and Loas then Philippines.
It flows through Thailand, Laos, Cambodia, Burma, China, and Vietnam.
Tonkin - in Vietnam Annam - in Vietnam Cochinchina - in Vietnam Cambodia Laos
Cambodia
Vietnam
Being so close to Vietnam, Cambodia was able to receive the "over-flow" from it.