About Us SINOSUN is one of China¡¯s dominant manufacturers and exporters of precisioned Asphalt Machines and Plants. An asphalt plant is a plant used for the manufacture of asphalt, macadam and other forms of coated road stone. For over 15 years, SINOSUN has supplied the asphalt industry with high quality parts and equipments. From replacement drums and dryers custom fabricated in our factory, to a complete inventory of the highest quality asphalt plants