Shijiazhuang Shangzu Building Materials Technology Co. LTD ,has been working in field of lignin R&D and application for many years.We specialize in the production of various types of cellulose ethers used in construction and daily chemicals.Our products include HPMC, HEMC, HEC, RDP and so on.The factory has a perfect R & D, production and sales system, can bring you perfect service, at the same time you can choose any product you want here. We have own technology center to assist customers in product analysis, product development, formulation optimization and more. At the same time providing the most competitive products, providing customers with the best customized service is our goal.