We bought our sofa bed from IKEA in Taoyuan, and it’s a godsend!
It’s sturdy (we’ve had a couple who together weigh 250kg+ sleep on it for 2 weeks!), well-made, and the mattress is really comfy. It folds up and out easily, has a durable cover, scatter cushions, and it looks good, too! The wife likes to curl up on it when she reads.
We’ve searched all over - mom and pop furniture shops, big local furniture shops, B&Q, Homebox, the works, but nothing came close to the one we bought at IKEA. I’m not a true fan of DIY furniture, but assembly was quite manageable, and I didn’t pinch my fingers or strip a nut.
Maybe you could check it out (the tag is a little worn, sorry): Lycksele Sofa bed 900.326.81
and 18557. For something made in China, it’s been doing a great job the past 3 years!
Ps. Some of these beds that were made BEFORE 2005 were recalled because they had missing plastic covers for the folding mechanisms. Ours was made after that date, and we don’t have that problem.
Good luck with your search!