SG5000 is one such product. Available in a range of handy cure times, SG5000 is suitable for bonding polycarbonate to itself, and cross bonding polycarbonate with metals such as aluminium and stainless/mild steel. No surface abrasion is required at all!
SG300 & SG800 are also quite suitable. Again, the choice is application dependent but the Scigrip products are unique in that they offer users primerless application.