1.Methylene Blue is mainly used for dyeing cotton, acrylic, linen, and silk. Its fastness is poor, and its sun fastness is level 2-3. It is also used for dyeing paper, coloring bamboo and wood, and manufacturing ink and lake. It can also be used for dyeing biological and bacterial tissues.
2.Methylene Blue itself is a compound that is used as a biological stain and is commonly used in medicine as a disinfectant. Its appearance is a shiny reddish-brown powder that is highly soluble in water, causing the water body to appear blue. Because methyl blue is mild, it can be used for long-term medicinal baths.

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.

Q2: Payment terms

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.

After-sales Service

1. All products are manufactured and inspected in compliance with national standards. Defective goods are never delivered. We strictly abide by quality commitments and after-sales regulations.

2. If you have any quality complaints, we will respond within 24 hours. Should our products fail to meet quality standards, we offer a full refund.