Calcium powder typically runs for NT $ 1200-1400 per liter in the marketplace, but Tsay teaches farmers to manufacture their own by mixing vinegar and lime to the tune of NT $ 5 per liter! Putting safety first
一般市售鈣粉 1 公升約 1,200 ~ 1,400 元，蔡東纂教農民用醋加石灰自製，1 公升只需 4 ~ 5 元！