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The iVoler 75W USB Type C Charger with Power Delivery can charge the Apple MacBook (Early 2016) but not using the same 14.8 Volts @ 2 Amps (29 Watts) that you get from fast charging with the Apple 29W USB-C Power Adapter.

Based on the protocol trace taken with software from Granite River Labs, at first glance the iVoler charger supports 15 watts (5 volts @ 3 amps), 27 watts (9 volts @ 3 amps), and 45 watts (15 volts @ 3 amps) power profiles.  However, when you look deeper, the iVoler charger is issuing source capabilities that advertise different PDO's- one source capability advertises 3 PDO's (5, 9, 15 V) while another source capability advertises 4 PDO's (5, 9, 15, 20 V).  Issuing source capabilities that advertise different PDO's violates USB Power Delivery Compliance.

The Apple MacBook (Early 2016) needs 14.8 volts for charging quickly over USB Power Delivery.  Interestingly, the MacBook requests 30 watts (15 volts @ 2 amps) of charging from the iVoler 75W USB Type C Charger even though the iPad Pro did not do the same with the same iVoler charger.

Actual current pulled by the Apple MacBook (Early 2016) from the iVoler 75W USB Type C Charger was about .7 amps with the MacBook being well charged.