Last year, a farmer in Kien Giang brought China old combine harvesters to order Mr. Dung to improve into tractor rice. From the first products, more and more people bring their broken machines to his firm for improvement.

With China bulky combine harvesters, he removed cage of the machine and remained main parts of the machines, gearboxes, chains. He welded the rear tank to carry rice. He finished these machines; each of them costs 50 million VND. Each average year, his firm sold and did outwork about 100 China combine harvesters.