I found the project in PCBWay open source 
community--https://www.pcbway.com/project/shareproject/PCBWAY__Ruler_design.html.

I placed order and after 7 days receive it.To be honest,the matte black 
is beautiful. But they forget the note that the serial small holes 
should be immersion gold,now only 3 holes are immersion gold.

Anyone tried PCBWay after-sale service?

anyone tried search?
https://embdev.net/topic/430233#new

I remember they have online after-sale system.You can send mail to their 
sale directly or clieck "open dispute". Yes,The ruler is made 
wrong,check mine from them.