My only purchase was with Safe Camera Technology (HK) Co., Limited, and I would avoid them. My Hikvision cameras took almost 2 months to come, and customer service with "Tony" was terrible. He took many days to return emails, lots of excuses, apologies, broken promises and blaming DHL for the delay. Don't know if the English version cameras I ordered were hard to get from Hikvision, but I was really scared I had been scammed. Finally got the cameras and they're working well but it was not a good experience.
Joe