Jec volunteers attend corporate volunteer training course .
怡和机器义工参加企业义工训练课程.
Jec a leader in sustainable energy solutions .
怡和机器:可持续能源解决方案的领导者。
Jacobs engineering group ( jec , news ) : recessions -- especially great big , global recessions -- test companies , and investors get to see which companies handled the bad times best .