Dezhou Haitian Electromechanical Technology Co., Ltd. Dezhou Haitian Electromechanical Technology Co., Ltd. with 15 years expierences on R & D the concrete slab machines are the leading manufacture and supplier in china. We focuses on producing precast concrete equipment with advance technology and strict quality control.Products including prestressing concrete hollow core slab forming machines, prestressing lightweight wall panel forming machine,green house upright post machines, ...