Longchang chemical Co., Ltd. was established in 1996 and is located on the south side of 309 National Road, Shibu Development Zone, Changyi City, Weifang. Longchang set up production Department, Quality Inspection Department, Transportation Department, R&D Department, Purchasing Department, Finance Department.

We has passed the ISO-9001 quality system certification in 2018 and passed the environmental impact assessment audit. We has a group of professionals engaged in chemical management, production, and research and development. The company strictly follows ISO9001, ISO14001, GB/T-28001 It is required to supervise, control and operate all aspects of production in order to achieve the perfect combination of social responsibility, employee health, environmental protection and product quality.

We have carried out relatively close cooperation with the School of Chemistry and Molecular Engineering of Peking University and Qilu University of Technology, so that the company is constantly developing new products, from the initial sodium silicate to the subsequent main products and by-products of petroleum resin series. In 2015, We introduced many talents and opened a new laboratory, making a major breakthrough in Flame retardant and plasticizer and Light curing products. Our company’s products and comprehensive technical capabilities make us a leading enterprise in the chemical industry.

We adhere to the principle of “reputation first, quality stands” and follows the conception of “integrity, pragmatism, innovation and high efficiency”. At the same time, we are willing to share mutual benefits and establish a long-term win-win business relationship with our clients all over the world.