After having each climbed the corporate ladder, Madam Carrie Chan, 48, and Mr Gary Seow, 53, knew that they had had enough and decided it was time to strike out on their own, together.

In 2005, after having been married for 11 years, the couple founded Kydz International, a distributor and maker of educational toys for young children.

Neither of them had any background in childcare products or toy distribution - Mr Seow was a logistics manager, while Madam Chan worked in a trading firm.

This did not deter them. Madam Chan quit her job, took a diploma course in early childhood education, and the firm was born.

The idea behind the company was inspired by their two children - a son, 14, and a daughter, 12.

"When I was shopping for toys, I realised there was no one- stop shop that sold different kinds of toys all in one place, so I felt that this was a gap we could fill," said Madam Chan.

It was tough going at first, since they had no contacts and had to start from scratch.

"We started with nine toys and we had to knock on doors of various pre-schools to peddle our toys," recounted Madam Chan.

"Obviously, selling just nine toys is not good enough, so people asked for a wider range and we built it up from there."

Customers would tell the couple what kind of toys they needed - those for music, outdoor play or to teach science and so on - and they would source for such items from around the world.

Along the way, Mr Seow discovered he had a natural talent for toy design.

"I never knew I had this talent but when customers told me what they wanted, I would sketch out their ideas and eventually, I realised that some of these could work as designs for toys," he said.

"I started bringing my sketches to manufacturers and they said they could make them too."

Mr Seow has designed various toys since, such as different types of stacking blocks to improve hand-eye coordination.

It is making such discoveries that make working together so fulfilling, Madam Chan said.

"Through working closely together, I have gained a new appreciation for all the skills that he brings to the table. I would not have the opportunity to really see how gifted he is and I have learnt to respect him more each day," she said.

Kydz pulled in an annual revenue of about $1 million last year; this is set to rise as the firm explores new growth areas.

In 2011, the couple created a new division called Care - Creative Aids and Resources for the Elderly - focused on making toys and tools to aid elder-care professionals in the treatment of stroke, Alzheimer's disease and dementia.

So far, demand has been good, with several hospitals and elder-care centres ordering and giving Kydz ideas for new toys.

The firm has started selling its toys in Vietnam, Indonesia, Thailand and the Philippines, and plans to expand its presence in these markets and beyond.

Although running a business together can be taxing on their marriage, Madam Chan said it has ultimately brought them closer.

A tip for budding entrepreneur couples: Keep your business roles separate.

"We don't intervene in each other's area of expertise," Madam Chan said. "He does sales and product development, while I handle marketing and back-end functions like finance and recruitment."

Some might find it a chore to bring work home every day, but for this couple at least, that is one of the perks of running a family business.

"We relish the fact that we can discuss an important work topic late at night or we can laugh about the kids during a break at work," Madam Chan said.

"Our children have been involved in our business from a very young age too and they have helped out in exhibitions and appeared in our advertisements. Our best working moments are when we're out having dinner at a restaurant - that's where we come up with some of our best ideas."