The tontoyacry factory in the copper hills is located at the hawkshan cement plant in zhang zhou village, zhang zhengshan, xuzhou city, and is registered with the city's copper mountain market supervision authority, representing zhang zhengfei, and operates on general projects such as the manufacture of plastics; the manufacture of household goods; and the production of advertisements (in addition to the projects for which authorization is required by law, the operation is carried out on an autonomous basis under a licence of law)