SAC(Special Advisor Center) is a recruitment product owned by EFC Link. What we offer is the expert-level talents recruitment based on customers' demands. Every company is eager to have expert-level talents, but most of them, especially little and medium-sized start-ups, may not be able to afford expensive budgets to hire people like that. In fact, most companies may have a large number of jobs, which do not need to stay in the office every day, but to provide professional guidance and problem-solving when companies encounter problems. The "on-demand" model of SAC can help companies hire high-salary talents with a thirty percent budget. Especially important is: our recruitment process is free of charge without labor risks.