... and heating postion. At the same setting tempreture, using the chip of different size, BGA chip’s ... 28mm to 46mm, in total 5 types. Though using the same temperature setting, but different tuyere, ... But notice: BGA welding paste has the limited using time, stored in higher temperature will result in ... non-dust cloth and washing-board water to clean PCB. After solder-distribution, don’t touch solder by ...