The market offers two types of CNC dressing machines: semi-automatic and fully automatic. Semi-automatic machines are typically used for single-wheel dressing and require an operator to be present ...

Two 11th grade students have invented a semi-automatic machine that can shell 75 durians per hour and costs VND9 million (US$350). Pham Anh Thu and Dang Hoang Dung of Dong Du Secondary and High School ...