Lead-Free Solder Paste

I work for DuPont and we supply engineering thermoplastics to the connector industry. We heard that there's a trend towards lead-free solder paste. Can anybody tell me name of companies that are already using lead-free solder paste in US and Europe? Is this is real trend? What consequences lead-free solder pasted will have on SMT processing temperature? Thanks in adavance for your support. Regards, Barbara

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