• Net cash used in operating activities was $2670萬 for the second quarter of 2021, compared to net cash provided by operating activities of $1660萬 for the same period last year. Free cash flow in the second quarter of 2021 was $(33.5) million, compared to $490萬 for the same period last year. Cash, cash equivalents, and restricted cash were $10億 as of June 30, 2021, compared to $5億 as of June 30, 2020.