----- Nội dung ảnh ----- Tran Thi Bach Tuyet, who has 40-year (1) ___ in making mats, said that in the past people made mats by the traditional method so they only earned about 1.5 million VND per month. Now many households have invested (2) ___ weaving machines that help increase the production and (3) ___ of the products. Therefore, their income is much higher than before, sometimes reaching 12-15 million VND per month. Each employee who can weave 4 to 5 pairs of mats a day can earn tens