For some weird reason TradingShenzhen have both referral and affiliate program. ID for both of those programs is identical, different is only URL parameter.
It is easier to find ID on referral program page
Navigate to your TradingShenzhen referral program.
All you need is to copy that Affiliate ID, open extension options, go to Platforms / Chinese / Other, and paste Affiliate ID in the TradingShenzhen field.
Then close options, find the product on TradingShenzhen you want to share and click on the extension icon. It will generate an affiliate link for that page. Then you can use bit.ly to shorten that link (if configured) or copy and share it.