I try to find a used ERSA or similar for you, almost all IR BGA rework statation are copy the IR500A or IR550A, just tell me which one you like, and tell me the budget. any way, ACHI product is good, but the company already closed many years (the company in Beijing China), the ACHI product used many imported components, as you know, in China, good product will not have long life, only the cheap and rubbish product can be longer here. all the new ACHI product in market in NOT from ACHI, I also ever used several ACHI products, IR-3, IR-PRO-SC.