JYY mechanical
Tianjin, China
6000 drill bits per year
From 3 working days, depending on the order quantity and inventory
Shockproof foam, greased on the switch
silt, gravel, clay and highly decomposed rock
130 * 130, 150 * 150, 200 * 200, 250 * 250
600-3000mm or as required
according to customer requirements
deep foundation
online support, video technical support