Popular brands in HK are: AE, Serpent or Xray.
At JV, can use speedmind foam tires. Front 36, Rear 32, no need tire traction sauce there.
Some c-hing play 3.7v, some 7.4v and some 11.1v.
AE is easy to set ,Xray the mannul new version very like Serpent.
these three car is very same design.
AE parts not only in 友邦, 1floor have parts sell too.