When Mr Yong, assistant marketing manager for a Shenzhen manufacturing company, produced a pair of pink star-shaped nipple covers for my perusal, I began to sense a problem.
I was in the industrial complex seeking flexible foot-tips for a range of steel chairs. Unfortunately, the marketing manager was overseas and I'd been left in the hands of his assistant, whose English was as limited as my Mandarin.
When I shook my head, Mr Yong appeared to understand, and with a gesture invited me to follow him into another showroom.
Here I was offered tea. Mr Yong disappeared, eventually returning accompanied by three smiling young ladies, all topless - except for their nipples, discreetly covered by heart-shaped silicone covers that flamboyantly flashed on and off in a variety of colours.
In broken English he explained that they could produce up to 100,000 pairs a week, with a minimum order of 500 pairs.