suggestion for Elecrow-
offer more board sizes..
your current board sizes mirror iTead/iMalls offerings...
(which I like and usually do use iTead for everything)..
however.. recently.. they were NOT the best choice.. based on the size options they offered for PCB's..
iTead:
5cm x 5cm
5cm x 10cm
10cm x 10cm
Larger than 10cm x 10cm
**bonus to flexible printed circuit options being available
Elecrow:
5cm x 5cm
10cm x 10cm
Larger than 10cm x 10cm
**bonus to FREE colored pcb's
SEEED:
5cm x 5cm
5cm x 10cm
5cm x 15cm
5cm x 20cm
10cm x 10cm
10cm x 15cm
10cm x 20cm
20cm x 20cm
**Bonus to multiple size/dimension offerings, NOT just square sized, but rectangle sized too for fair pricing and not over charging for not being 'square'
adding these other sizes/dimensions options will help get more customers... (I would have used ya over SEEED if the sizes were available this time) 