Optical Brightener OB1

The specification of Optical Brightener OB1 / 2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole CAS 1533-45-5 Factory supply 

Product name :Optical Brightener OB1 / 2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole 

CAS No:1533-45-5 

Molecular formula :C28H18N2O2

Formula weight ;414.45

 The COA of Optical Brightener OB1 / 2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole CAS 1533-45-5 Factory supply 

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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, Guanlang 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 Guanlang.This is the important reason for customers who choosing Crovell.In future, Guanlang must become to a more important trade bridge for china and foreign countries especially in pharmaceutical industries.

Exhibition

FAQ

why choose our company

1. quality

our products meet msds safe standard and we have iso and other certificate so yan can get high quality products from our company.
2. price

we are the company which is the joint of trade and industry so we cao provide the competitive price and high quality product.

3.packing

we can do according to the customers' request.

4.transport

ems,dhl, tnt, ups ,fedex, by air, by sea
dhl express, fedex and ems for quantity less than 50kg, usually called as ddu service;
sea shipping for quantity over 500kg; and air shipping is available for 50kg above;
for high value products, please select air shipping and dhl express for safe;

5.service

we offer specialized logistic service including export declaration,customs clearance and every detail during shipment,this makes
us able to offer you one-stop service from the order to the products transported to your hand.

we will try our best to satisfied you.
1. tailor-made for every customers.
2. third-party test for the products you demand.
3. test your counter-samples and produce them for you.
4. best discount for old customers.

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