ianjin Guonuo Zhongsheng Chemical Co., Ltd is a professional manufacturer and exporter.Our company has passed the certification of ISO 9001:2008. Our products’ quality is similar to or even better than the products from overseas. Our goods have been exported to all over the world, such as America, Midle-East, Africa, Asia and enjoyed good reputation. We sincerely hope to enter into good and long term business relationships with you .