天堂av资源在线,麻豆疯狂做受xxxx高潮视频,韩国一区二区三区美女美女秀,成人精品一区二区三区四区

From its founding of the first factory as Zhanhua Darong Chemical Technology Co., Ltd in 2002, DARONG CHEMICAL has shown continuous growth over the years, and in 2012 the completion of the Zhanhua Darong Chemical Technology Co., Ltd became the stepping stone to facing new challenges in the next phase of our growth.
Zibo Darong Chemical Technology Co., Ltd was established in 2002, mainly producing sulfur monochloride and sulfur dichloride which are used to produce lubricate additives. With the full realization of DCS automation, the total capacity of sulfur chlorides reached 10,000 tons annually at present. 
With the experienced technicians and complete inspection equipment, our products are highly appraised by our customer.
The Zhanhua factory was built in the north-city industrial park located at Zhanhua county, Binzhou city, Shandong province in 2010, which is 200 kilometers away from Tianjin port, 300 kilometers away from Qingdao port. The factory covers an area of 68,000 m², construction area 30,000 m². 
The productive capabilities of the factory are 2,000 tons of rubber chemicals and 2,500 tons of sulfur chemicals. The factory supplies high quality products to different industries.
We put the environment and safety first, making efforts to harmonize with the environment and all of our employees do their best to create products of the best quality.
The Zhanhua factory will continue to move forward as a state-of-the-art fine chemicals production facility that produces the highest value-added products.
The Darong research & development center was established in 2011 and uses its unique Know-how to develop new products and improve the quality of our products.
We possess a great staff consisting of researchers that hold masters and doctors degrees and conduct a lot of cooperative work with other research institutes in an effort to make technological innovations. We are also making efforts to develop products for modern electronic information industries and we also conduct research and development of new materials for new industries.
Using state of the art analysis equipment such as the HPLC, GC, MS, NMR, DSC and FT-IR we do our best to control the quality of our products in order to satisfy our customers.
We are also doing our best to secure the competitive powers of our clients by providing them with the products that they require in the rapidly changing market by developing environmentally friendly products for special uses.