4-Sulfo-1,8-naphthalic anhydride potassium salt

Hebei Guanlang Biotechnology Co., Ltd. was founded in 2007 , located in Shijiazhuang city which is the capital of Hebei Province and hub sector among Beijing Tianjin and Hebei and has advantage of convenient transportation . Our company is a modern high-tech chemical enterprise with Research & Development, production and sales. Our company has strong technical strength, advanced equipment, strict quality management system and high-quality after-sales service, adhers to the "customer first and forge ahead" business philosophy and insists on integrity as the company's survival. All for the customers’ satisfaction, all for the long-term healthy development of the enterprise. In the past 10 more years, we have been strictly managing the whole trade process, focusing on every detail, providing customers with all-round services such as product purchase, R & D, quality control, logistics management and so on, and become reliable cooperation company and partner for our clients. Nowadays We formed large varieties, large scale, complete categories, refined degree, added value and high technology content product chain .There are several series including pharmaceutical products, food grade additives, industrial grade, fertilizer grade and mineral products. In recent five years, the company has implemented the strategy of "going out" vigorously. We has established our branches in Hubei China, Vietnam and Mexico, making our market and sales network more and more perfect. Our company will continue to adhere to the strategic positioning of fine chemical industry in the future and competition ideas of irreplaceable product differentiation, and strive to become to the leading of Chinese chemical industry. As a way to use the resource on the expanding info in international trade, we welcome prospects from everywhere on the web and offline. In spite on the high quality items we offer, effective and satisfying consultation service is supplied by our qualified after-sale service gro