We're excited to have him and hope he's feeling some brotherly love from his new home — welcome to Philly, Bryce! Our payback was less than 5 years, given the incentives at the time of production. What If I Don't Move At The Same Place, As My Family? All persons depicted herein were at least 18 years of age at the first. I asked Xefro co-founder Tim Harper, why graphene?