One carriage of the train bound for Myanmar carries 60 containers of machinery, electrical accessories, cars and spare parts.
The train left China via the Lancang border gate in Yunnan province.
The new route will reduce transport time by 20 days, thereby cutting expenditure on commodity flows by 20 per cent, the embassy statement said.
On May 21, a China-Laos train on a new road-waterway route left Chongyun, arriving in Vientiane after four days, the embassy announced.
Meetings at the union and lower levels have taken place to reopen the Chinese-Myanmar border gates by June.
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