Maybe many people doubt me,but you can see our company website: http://www.e-cer.com.
And my email also enterprise email.
Hi Jos
How about the Nichia 119 copper mcpcb, if you also have any problem please tell me?yes if the orders goes through,
we will send a few free DTP copper for you testing.
Best wishes
Sundy
DTP copper mcpcb testing report
ShenZhen KeRui Electronic Industrial Co., LTD
Copper substrate performance parameters form
Copper Substrate Model KR-CU-350W Product name Copper radiator panel
Performance parameter Unit Test value Test Method
Peel strength N/mm 2.2 GJB1651 - 4010
Surface resistance MΩ 1×(10^6) GJB1651 - 5020
Volume resistance MΩ.m 3.2×(10^7) GJB1651 - 5020
Breakdown voltage KV/min 1.0 GJB1651 - 5040
Dielectric constant - 3.0 （40℃，93%，96h）
Dip soldering of resistance ℃
260℃ 3min
No bubble, no
stratification
GJB1651 - 4010
Flammability - FV-0 GB/T4722 - 17
LED Solid crystal area with
the substrate conduction of
thermal conductivity
W/m.k- ≥350
Long-term use temperature ℃ ≤110 （40℃，93%，1Y）
The thermal conductivity of
the metal matrix W/m.k- ≥350
The google translater is killing.
This is our company direct thermal path copper mcpcb testing report.
Can you list what size MCPB you currently make?
Can you list what LEDs the MCPBs currently work with?
Thanks!
Hi
We currently make DTP copper mcpcb many,any size have,We customize and design MCPCB according to customer requirements.
Sometimes,we made some standard DTP copper mcpcb,such as 10mm,16mm ,20mm,31.6mm with cree xml and xhp50 xhp 70.
Thank you
Sundy
leo ou
It would be great for you/and us if you consider producing a NON DTP( thats a must) copper XBD 16mm copper pcb- there isnt such pcb awailable at the market and those IR Oslons badly need one 
yes,if you need,we can make copper mcpcb for you.
Thanks
Sundy
Hey all,
If anyone is curious here are the results I got from purchasing from this company 
Thank you for making this possible Sundy.
Well, at least with regards to those leds with a lack of thermal pad, no one wanting to ask for an orders of magnitude improved thermal conduction dielectric? 
Cheers ^:)
Today I received an order of ledboards that I had made by Shenzhen Kerui Electric Industry. It is 128 pieces of Nichia 119 16mm diameter non-DTP boards, but I tried to maximise the heat path of the boards. For several leds without central thermal pad I would have liked this type of board but I could not find it: Nichia 119, Nichia 276A UV, LuxeonZ will fit too, and the new large Nichia’s (if available at some point) will work too by scraping off some solder mask. The costs for the 128 boards (I ordered 100 and they made 128) were, including shipping and taxes from dutch customs, 258 dollar, so about 2 dollar per board. I’m going to test these boards against a ‘standard’ alumnium Nichia 119 board (came with my Convoy S2+ 276A UV light) to see if they really do a bit better (but I do not expect DTP performance).
I’m going to sell these here on BLF for 2 dollar each plus shipping, so cost price. I have no idea how many people are interested, and it may depend on how well they test
Details:
–16mm diameter, 1mm thickness to support many common flashlights
-core = copper
-the two electric led-pads widen in a as large as possible pour to help the heat to go sideways and then pass the dielectric layer over a larger surface area.
Thanks for letting us know djozz
With the Nichia119 board order I received a couple of their XM-L/XHP50 DTP boards for free, which is a nice gesture. I believe these are the same that vestureofblood sells at the moment. They look good and I checked how flat the pads are with a razor (good!) and also sawed one in half to check the DTP pad (good too!). I see no reason yet why these boards would not perform very well. Here’s some pictures:
Sweet. SO the pad is actually raised up in the center above the dielectric layer. It looks like only the thickness of the solder mask layer is counter sunk.
EDIT: If you dont mind can you post that picture of the cut away in my thread here also?
Yes sure, I posted them there too
Nice!
Now, where are those beryllium oxide and/or synthetic diamond dielectric MCPCBs? 
Cheers ^:)
[quote=djozz]
Today I received an order of ledboards that I had made by Shenzhen Kerui Electric Industry.
I’m going to sell these here on BLF for 2 dollar each plus shipping, so cost price. I have no idea how many people are interested, and it may depend on how well they test
Thanks for doing those, djozz. I’ll be in for a few.
Not for me djozz but love the hacksaw work. Thanks for taking up the initiative for others here. 