In the stone hair plate, if the width of 400-430mm called 40, 600-630mm called 60 head.
Do not fool, the Chinese stone industry is not formal,
Refers to the width of the stone is generally 40 feet is 40 cm more than 60 head is more than 60 cm
How many heads of the first few words, the main role is to improve the rate of production, for example, only need 400mm wide stone, with 60 of the board, to waste another 200mm. At this time with 40 and 80 will be better.
