High quality 99% min DDS 4,4'-Diaminodiphenylsulfone / 4-Aminophenyl sulfone CAS 80-08-0

Supply high quality 99%min 4,4'-Diaminodiphenylsulfone 80-08-0

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Company Profile

Welcome to Hebei Guanlang Biotechnology Co.Ltd (Guanlang)

Guanlang is a fast growing intermediates company,Which located in Shijiazhuang,Hebei Province.Our main product is chlorine dioxide, Sodium dichloroisocyanurate(sdic or nadcc) ANDTrichloroisocyanuric acid (TCCA)for water treatment.We also supply raw materials for detergent and hand sanitizer products,such as carbopol 940,carbopol stock solution,Hydroxypropyl methyl cellulose (HPMC) and so on.

Guanlang also supply various industrial chemicals for customers, such as citric acid,potassium chloride etc.After ten years development,Crovell has become a Diversified development company,not only involves in chemicals, but also real estate ,agricultural products and so on.So far, Crovell has  usiness in more than 35 countries,most big customers come from europe and America, because among the suppliers in China.

Guanlang can always make the product quality best, some of the products from Crovell can reach the purity of 99.9+, such as 2-phenylacetamide. This is the important reason for customers who choosing Crovell.In future, Crovell must become to a more important trade bridge for china and foreign countries especially in pharmaceutical industries.

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