Many big companies won't sign 'your' NDA but they will have their own one that is probably reasonable (although check it, and get it checked by a lawyer if you

Many big companies won't sign 'your' NDA but they will have their own one that is probably reasonable (although check it, and get it checked by a lawyer if you are disclosing anything really stealable). That can cause deadlock when bit companies need to talk to each other...