Qingzhou Sanlian Heavy Industry Equipment Manufacturing Co., Ltd. is a collection of scientific research and development, engineering design, production and installation, commissioning services in one of the professional manufacturers and large-scale processing enterprises. The main products are: dredgers, Gold dredger,sand dredger ,wheeled sand washing machine, bucket sand washing machine, spiral sand washing machine, greenhouse equipment, vibrating screen and so on. Our products are sold all over the world,such as Africa, Mali, Benin, Nigeria, Pakistan, Indonesia, Malaysia, Serbia, Ukraine and other countries. Our mineral pro...