Upgrading Assan GA250

Meng says:

if any people want send the old GA250 back,just do it. here is our address:

ASSAN Electronic Control Tech. Co., 

ADDRESS11F, Block A, Chongqing Business Incubator For Overseas Returnees, Erlang 

No.77 Kecheng Road, Jiu Long Po; Chongqing 400039, China.
Tel: +86-23-86502455 / 86502466