Huizhi Holdings ,a well known group in chemical production& oil filed service in China. Our business is widely spread in Oil Field Drilling, stimulation , cementing , Mining Industry, Water Treatment and Paper making, and agriculture.........SDB is referring to SHANDONG BIO-CHEMICALS, a subsidy of Huizhi Holdings ,is now growing rapidly in global market. Our scope: Chemicals Supply & Tailor Made Technology & Project Contracting and Operation Our state-of-the-art plants are designed and highly au...