Anoison is one of our Ecosystem Partners for cables - http://www.anoison.com/products/RF_Cable_Assembly/
You can look at other sources as well (Vetev/Terrawave). The issue you will hit is that 10m RF cables will result in a lot of loss (depending on the type of cable you select). I did find this at Terrawave/Ventev
http://www.terra-wave.com/shop/25-tws240-rpsma-jack-to-rpsma-plug-cable-assembly-p-1903.html
Just note that LMR240 will be super high loss (7-8dB of loss in both Tx and Rx), and LMR400 is slightly better at ~4dB of loss for 30'/10m.
Your best bet is to reach out to each company directly as most cables (US) are done at 5', 10', 25' and 50ft. if you really need 10m it will likely need to be custom, and they would need to build, test, and certify the cable. And since you need or require Plenum, that likely requires different jacket material and content within the cables which will raise the cost as well.
The better the cable, the higher the cost. For LMR400, using this for 50' (http://www.terra-wave.com/shop/50-tws400-sma-plug-to-sma-jack-cable-assembly-p-2681.html), that's $75 per cable, and you will need three cables per antenna. This is likely NOT plenum rated, so costs will go up.