Beijing Wuzhou Century Red Star Chemicals Ltd. is ISO9001 certified and specialized in production and sales of various kinds of chemicals. Contact us at email: wzsjhxlj@163.com  北京五洲世纪红星化工有限责任公司,己通过ISO9001国际质量体系认证,生产各种化学试剂及精细化工产品。尤以稀有元素无机盐、通用试剂、有机溶剂、无机铁、***