I have been in hair business a few years.
2013, not much people use smart phone, I start to use WhatsApp at 2014, spring.
at that time, Email is still the most use in work.
Now, most messages send by WhatsApp, I send a lots of Email try to find some wholesaler, retailer, nobody reply me.
Unfortunately, WhatsApp is forbidden in China sometimes.
Also, without VPN, I can’t log in Facebook, Instagram, Google, Twitter, what can I do else?