Below is some B2B websites that can help to find more suppliers:
www.alibaba.com
www.made-in-china.com
www.globalsources.com
www.hktdc.com
Now,,, Covid-19 has passed, we suggest,,, if possible, going to a professional lighting fair and talking to the suppliers is better than online chat, face-to-face talking is always a most direct and efficient way to know the field.
If you have friends who knows this, this is the best way as
If you need ATEX certification, please check the validity date of the certification, and the name should be the the company name you’re going to deal with.