For decades, it has produced silver salt series such as silver nitrate, silver chloride, silver iodide, silver oxide, silver sulfate, silver purification, chloroauric acid manufacturing, sodium carboxymethyl cellulose. In 2009, due to the expansion of the company's business scope, the product line was extended, and new business projects were added: environmental protection product research and development, technical consulting and transfer services, sewage treatment equipment, high-strength corrugated composite board and its product manufacturing and processing. The company has a good sales situation. Its products are mainly sold to Sinopec, the Chinese Academy of Sciences, Wahaha Group and other major companies. It also provides supporting products for national key projects and enterprises such as the aerospace film project team of the Institute of physical and chemical technology of the Chinese Academy of Sciences, Sinopec Beijing Yanshan Petrochemical, Shanghai film factory and so on. In particular, he has participated in the research and development of aerospace raw materials. The "Yuyu" brand high-purity photographic silver nitrate is continuously used on the "Shenzhou V" and "Shenzhou VI" spacecraft. It is one of the important raw materials for spacecraft photographic film, and has obtained the certificate issued by the special photosensitive material research center of the Institute of physical and chemical technology of the Chinese Academy of Sciences. Sinopec, Shanghai Huatong platinum silver trading Co., Ltd., Shanghai Changyin company, Lanzhou Jinchuan Group and other large companies provide long-term supply to ensure that the company's production meets market demand. From the first half of 2007 to the first half of 2010, our company invested more than 50 million in the automatic transformation of the food additive sodium carboxymethyl cellulose device through the rectification of potential safety hazards, expanding production capacity and increasing market share. The company has focused on increasing the research and development of new products. The high-tech products silver powder, silver slurry and sewage treatment have also entered the stage test, especially the investment in sewage treatment facilities. In 2012, it was listed as the pilot project of circular economy standardization in Jiangsu Province, ensuring the recycling of process wastewater and promoting it to the same industry. The company has long employed experts and professors from the Chinese Academy of Sciences to guide production and train its technical personnel. In particular, the company has invested a lot of scientific research funds. Only one "ICP level observation full spectrum direct reading plasma emission spectrometer" produced by Speke company in Germany is worth nearly one million yuan, and there are only 3-4 within the scope of Shanghai Nanjing line. The detection limit of this instrument reaches µ g/l, which can basically test all elements on the chemical periodic table, ensuring the monitoring of product quality. Our company is an enterprise integrating scientific research, production, inspection and sales. With perfect management, the company passed the ISO9001:2000 international quality system certification in 2001 and the ISO14001:2004 environmental management system certification in 2007. In 2009, the "Yuyu" brand trademark of the company won the "famous trademark of Changzhou City". In 2010, it won the titles of "famous trademark of Jiangsu Province" and "famous brand product of Jiangsu Province" again. With strong strength, advanced production technology, based on the market, facing high-end users, it is committed to the creation, research and manufacture of various types of silver nitrate. In 2012, the "Yuyu" brand silver nitrate passed the "China famous trademark" at one time. In recent years, the production and sales situation has been good, and the enterprise has been comprehensively improved in terms of economic strength or sales status. In 2014, the company's sales reached 960 million yuan, and it is estimated that the sales in 2015 will reach 1 billion yuan. For decades, our products have been highly praised by new and old customers. Based on the tenet of "customer is God, quality is fundamental" and the principle of "customer satisfaction - our hope, continuous improvement - our pursuit", our company will continue to provide high-quality services to new and old customers in the future. Sincerely look forward to working with you to create brilliance!