1. UV absorber UV-531 is an excellent and efficient anti-aging additive that can absorb UV light from 240-340nm (particularly strong at 270-  330nm). It has the characteristics of light color, non-toxic, good compatibility, small migration, and easy processing.
 

4. It has good compatibility with resin and low volatility, with a general dosage of 0.1% -1%. It has a good synergistic effect when combined with a small amount of 4,4 '- thiobis.

FAQ

Q1: Sample request

Could I get a sample before placing an order?

For high-value items, you only need to cover the sample cost and shipping fee. After long-term cooperation or once you become our VIP client, we can provide free samples upon your request.

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We accept T/T, L/C and trade insurance. You may pick the option that suits you best.

Q3: Delivery & lead time after payment

Small orders will be sent via international couriers (DHL, FedEx, TNT) or air freight. You will receive the goods within 3 to 5 working days after shipment.

For bulk orders, sea shipping is the most cost-effective choice. Transit time ranges from several days to weeks, depending on your destination port.

Q4: Custom packaging & labels

Yes, we support customized labels and packaging as per your requirements.

Q5: Quality assurance

All our products are fully qualified. We conduct strict testing and will provide the Certificate of Analysis (COA) prior to delivery.