亚洲a∨精品一区二区三区下载-亚洲a∨无码一区二区三区-亚洲a∨午-亚洲aⅴ-亚洲aⅴ乱码一区二区波多野-亚洲aⅴ日韩aⅴ高潮潮喷无

Located in Weifang City (the capital of kites), Weifang Dongfangsheng Chemical Co., Ltd. is a joint-stock enterprise engaged in the research and development of chemical technology and production and sales of chemicals, with the right to have import and export business independently. Equipped with international standard quality testing equipment and analytical instruments, we have formulated industry-standardized internal control standards for raw materials and finished products, and successfully established a standardized quality management system which can meet the standards of the ISO system. Now, all our products have reached the level of this industry.At present, we are a manufacturer of zinc series products, including battery grade zinc chloride, industrial grade zinc chloride, zinc nitrate, zinc carbonate, zinc dihydrogen phosphate, phosphating solution, ammonium chloride and...