About 2 Trademarks found that are owned by Ma Yunfeng

AC generators (alternators); dynamos; boat engines; gasoline engines not for land vehicles; diesel engines for machines; diesel engine not for land vehicles; motors, namely synchronous motors not for land vehicles; vacuum pumps (machines); gas turbine engines not for land vehicles and replacement parts

AC generators (alternators); dynamos; boat engines; gasoline engines not for land vehicles; diesel engines for machines; diesel engine not for land vehicles; motors, namely synchronous motors not for land vehicles; vaccum pumps (machines); gas turbine engines not for land vehicles and replacement parts