The role of the brightener is to convert the invisible ultraviolet radiation absorbed by the product into purple-blue fluorescent radiation, which complements the original yellow radiation to become white light, and improves the whiteness of the product under sunlight. Brighteners have been widely used in textiles, papermaking, washing powder, soap, rubber, plastics, pigments and paints.
Generally, brighteners are divided into two categories, one is water-soluble brighteners, and the other is water-insoluble brighteners. The former can be used as a brightener for paper, paint, washing powder and cotton fabrics. The latter can be used for whitening of chemical fibers and plastics.
It is often divided into:
This product is especially used for the molding and processing of various plastics and plastic products under high temperature. Because of its good heat resistance, light resistance and chlorine resistance, it is a brightener for polyester fibers. Polyester, cotton and other fiber blended fabrics The whitening effect is also particularly ideal, and can be used for the whitening of polyester stock solution.
Optical Brightener,Optical Brightener For Pvc,Optical Brightener Masterbatch,Optical Brightener Ob1,Price Optical Brightener Henan Shunbang Chemical Industry CO.,Ltd , https://www.spvcresin.com
API6D A216WCB Cast Steel Resilient Seated Wedge Gate Valve
Standard
API 602,BS5352,API 598/600
Pressure
1.0~2.5MPa
Size
DN50~DN600;1/2''-24''
Material
WCB,Bronze,Brass,Stainless steel
Type
Rising Stem, BB, FB, OS&Y
Medium
water oil gas and so on
Operation
Hand Wheel. Gear Devices, Electric, Etc
Design and Manufacture
Conform to API 600Â
Flange dimensions
Conform to ASME B16.5Â
Face to Face dimensions
Conform to  ASME B16.10
Testing
Conform to API 598
Driving mode
hand wheel, bevel gear, electric
1.    OEM Factory : Professional manufacturer, clients from whole world. A group of highly experiencedtechnical engineers is right here waiting for any of your requests.
2.    High Quality, Competitive Price: Custom is accepted.
3.    Complete Service: Long service Life, Fast delivery, Multilingual services.
4.    Certificates: ISO9001, CE, , UL, WRAS.
5.    Low MOQ: Ready for providing the sample and producing some small orders.
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Market supportÂ
In order to help customer promote BSFW brand, we can supply strong market support. Various promotion items according to partners demands
Q1: Can I have my own customized product?
A: Yes, your customized requirements for color, size, mark, etc.
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Q2: Can I have my own Logo on the product?
A:Yes,we can print your own logo on the product,antes de production,you
can tell us your requirements of logo.
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Q3: Can you produce the products according to my own drawing?
A:Yes,we can produce the products according to your drawing.
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Q4: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
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Q5: What is your terms of payment ?
A:For the payment,we can discuss according to the specific operation of orders.
Q6: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
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Q7: What certificate do you have?
A:We have ISO9001,UL,FM,CE and WRAS certificate.
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Q8: Can I request to change the form of packing and transportation?
A:Of course,we can pack and transport according to requirements of customers.
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Q9: Can I request to advance the shipment?
A:Yes,if you need advance the shipment,please inform us in advance,
we will arrange the shipment according to your requirements.
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Fluorescent brightener for detergents; Fluorescent brighteners for textiles; Fluorescent brighteners for papermaking; Fluorescent brighteners for plastics and synthetic materials; Fluorescent brighteners for other purposes.