This Zone is quite silence for a long time,don't have any new brand on market ?

Emco is a brand of the German "Erwin Müller Gruppe Lingen". They started out with the production of office products in 1949. In 1994 they already started a subsidiary in China. Their Headquarters burned down in in 1995 and was rebuilt in 8 months. In 2009 they started off in Hongkong as Emco Novus International and also founded the electric scooter subsidiary "emco electroroller GmbH".
Their electric scooter business appears to be a pretty independent thing, also based in China, but not relying on one of the generic scooter designs. Their service has up till now been absolutely impeccable, and they are thus probably the fastest growing electric scooter brand here in Germany, because this business is not just based one or two people, but part of a far larger company group. I assume they will outlast most of the current small importers and I wish them more success than my importer had...

Here is a link to their website, but it is in German only:
http://www.emco-elektroroller.de/

And thus CHL should also be interested in this company ;-)

Remember, EMCO is mainly active in Germany, and possibly Austria and Switzerland. EMCO users therefore post in German-Language forums such as this one:
http://www.elektroroller-forum.de/E-Roller-Forum/viewforum.php?f=1
There are not many (like me) who post both there AND here.

Actually there is a new thread there collecting user feedback on battery performance of EMCO scooters. Maybe you can use an online translation provider to gain the insights you are interested in:
http://www.elektroroller-forum.de/E-Roller-Forum/viewtopic.php?f=7&t=1522