Optical Brightener 4BK /Optical Brightener Liquid Application:

It is suitable for whitening of various blended fabrics such as cotton and polyester and polyester-cotton, polyester yarn, polyester and linen, polyester wool, etc. It has strong fluorescence, positive color and whiteness, and has good resistance to weak acid, alkali and boron Salt, hydrogen peroxide and other functions. The fluorescent whitening agent 4BK has very good solubility and dispersibility. Especially suitable for high temperature dip dyeing process.

Optical Brightener Liquid Optical Brightener 4BK Advantage:

1. Optical Brightener 4BK /Optical Brightener Liquid has high-efficiency fluorescent whitening effect, strong whiteness enhancement, bright and bright color (slightly purple and blue light)
2. Not sensitive to light and stable in chemical properties.
3. Optical Brightener 4BK /Optical Brightener Liquid is resistant to weak acids, alkalis, hydrogen peroxide and perborate, suitable for alkaline oxygen-bath processing technology, and also suitable for pad dyeing process
4. Excellent washing resistance.
 

Q1: Competitive Price?
We provide high quality products with competitive price in China. 

Q2: Low MOQ?
No worry about the low MOQ, our MOQ is 1 kg.

Q3: High Quality?
We have strict quality system to control every step of the production to guarantee best quality.

Q4: Inspection?
Four steps: sampling, sample pretreatment, measuring and data processing.We will provide test samples for check quality of products, before the shipping, we will send pre-ship samples to check really products. 

Q5: Producing?
Full-time inspectors through check the operator self-inspection, and review and sign in the corresponding record. Full-time inspection is responsible for inspection of finished product, and make the finished product incoming inspection records.

Q6: Delivery?
Small Order shipped by courier, Bulk order shipped by air or sea. Delivery time depends on your order quantity. If the goods were lost, please contact us Immediately. We will inform you all at every stage of shipping.

Q7: Packaging?
we can provide stardard package, we also can provide special package according to customer's requirement.

Q8: 24h Service?
Fast respond save client's time, we promise to reply inquiry in 24 hours.


Q9: Payment method?
Western Union, MoneyGram, Paypal, TT, LC, OA, DP.