Some LANCE Scooter Manuals PDF are above the page - PCH, Duke, Havana, Cabo.
China makes more scooters than all other countries combined. All manufacturers and models are very difficult to list. A large number of factories produces almost identical scooters.
Production is based on the cloning of early Japanese engines and gearboxes. Quality control is usually quite poor. You can buy good, or you can buy bad goods.
As a rule, they are sold by importers, not dealers. Importers simply ship packaged scooters from China to other countries. You will receive what was packaged in China. Some scooters require assembly (and usually this is). The main plus of Chinese scooters is their price.