With new China tariffs hitting, how are you finding alternative suppliers?

The new tariff announcements have me (and probably a lot of you) looking at diversifying away from China. I'm particularly interested in Indonesia, Vietnam, and Thailand. 

For those who've already made the switch or are exploring: 

1. How did you find your first non-China supplier? Alibaba? Trade shows? Agents? 
2. What's your verification process? How do you know they're legit before placing a big order? 
3. Biggest red flags you've encountered? 
4. Any tools or services that actually helped (vs just wasted money)?

What's been your experience?