1.Is the sample fee refundable or not? We can return it, but we will return it to you when we need you to place a bulk order 2.How long and how to get sample from us? A:1)If you need some sample to test ,we will make it as your request. Please tell us the type and quantity.You should pay for sample cost and the transportation freight of samples. 2)Lead time for making sample:about 30 working days 3)The transportation freight of samples:the freight despends on the weight and packing size and your area.. 3. How can I place the order? First sign the PI,pay deposit,then we will arrange the production.After finished production need you pay  balance. Finally we will ship the Goods. 4.Can you send products  to my country? Sure, we can. If you do not have your own ship forwarder, we can help you

With the popularity of electronic products, online education is also popular. More and more children have access to mobile phones, computers, learning machines and other devices. Blue light lurking around is damaging children's eyes. Professional anti blue light glasses, designed for primary school students anti blue light eye glasses. Dark yellow lenses effectively filter out harmful blue light, while hd lenses restore true color. Blue light blocking rate can give children visual protection, for children's visual development escort. The frame adopts comfortable anti-slip nose rest, comfortable to wear, no sense of pressure attached to the bridge of the nose, flexible mirror leg is not easy to break, not easy to slip, comfortable to wear. Light and comfortable, fresh color. Adjust freely according to different face shape. It is more comfortable to fit children's face, and does not pinch the face to wear the weight feeling, and does not affect the development of children's facial bones.