hi. I am searching for Al4004 alloysheet(thicknessis about 0.2t or thicker)for aluminum vacuum brazing.(our company is specialized in heat sink and cold block manufacturing)we are using the clad filler that has 3 layer (AL4004, Al3003, Al4004) for Al brazing but, in my opinion, clad filler is not necessary for heat sink brazing.so, i want to some test.Can i receive the sample for some test?I will pay delivery fee.and I want to know MOQ andthe cost per tonhave a nice day Show More