OK guys - here is an example of a gear shop in Shanghai called 'Nlook'

http://www.nlook.net/genjiaoqi.html

In Chinese 'Follow Focus" would be '跟焦机' pinyin= Gēn jiāo jī

Currently the RMB = 6.48110:1USD

Nlook is not the cheapest, and I have never tried their stuff but its a good example of what you can easily find around here.

It may be best to look up : http://www.taobao.com (chinese ebay) and paste in 跟焦机 or whatever in search. perhaps our Chinese literate members can do more heavy searching. I could ask my wife, but I'm not 'supposed' to be shopping around for any gear. LOL

As a newbie - I don't want to spend so much either but like a lot of people I've been bitten by cheap ass gear more than once so I ended up buying this nice follow focus unit from a Taiwanese shop here in Shanghai called 'Keystone' that sells 'Skier' branded gear (they seem to fashion themselves after Redrock - they are a local Redrock supplier). It was 2560 RMB ( $395USD ) - I know I could of gotten cheaper like the D|Focus - but that looks really flimsy.

FF link:
http://www.funfoto.cn/tel/front/bin/ptdetail.phtml?Part=AAA4281

The unit is excellent quality, very smooth with no backlash - with a nice quick release mount & gear adjustment.

Taiwan Shop Link:
http://www.kphoto.com.tw/front/bin/home.phtml

I know it's all in Chinese - but google translate got me to find all these things :-)

Good Luck!