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  • Q Why you request MOQ= minimum order quantity ?

    A We have very competitive minimum order quantity, even no limited quantity for clients' order.

    1. There are distributed too many degrees. If small order qty, the quantity for each degree will be short.
    2. The resin lens is mass produced. It will heavily increase the wasting of material, water, electricity, labor, and the production cost in the end.
    3. We request a low & competitive MOQ, or zero MOQ for some items. For normal products, we suggest MOQ=1000prs, as you will pay higher shipping fees for each lens, if your order quantity is lesser.
  • Q How to choose lenses for different degree?

    A A. Less than 3.0 diopter
    You can choose lens refractive index at 1.5 / 1.56. for better performance,clarification and safety.
    B. between 3.0-5.0 diopter
    You'd better choose the lens refractive index between 1.56-1.60, with suitable weight and good appearance
    C.More than 5.0 diopter
    You may choose lens refractive index above 1.60. Higher index lens is thinner and lighter to ensure comfort .
    D.It must be noted that, as higher index, the deflection of light will increase, which might cause dizziness, vomiting and other uncomfortable symptoms. Accordingly, high-index lens is not suitable for everyone.
  • Q How to choose lenses for different purpose?

    A A. If you work face computer screen and in other radiation environment, we suggest to choose strong anti radiation, EMI lenses; If you often in the meeting or in front of the camera, you can choose anti reflection coating lens and color coated lens, to reduce the reflection and increase the trust of the people you face to.
    B. If you are always work outdoor, we suggest to choose anti-UV colored lenses, such as tinted sun lensesphotochromic lenses, polarized lenses etc.,and grey & brown color is better enough; for surf riding and driving, better to choose the polarized lenses.It can effectively waterproof surface and pavement and reflection of the headlight; For skiing on snow field, tinted lenses and polarized lenses with anti-reflecting coating will be the best choice for you, which can prevent ultraviolet and snow reflected light; If you choose lenses for sporter and kids, safe should be the first factor. We strongly recommend hard lenses, which has excellent impact resistance performance.
  • Q What's the meaning of these breviations in Prescription ?

    A 1、Rx: Prescription
    2、Dv:Distance Visual
    3、NV:Near visual
    4、R. RE:Right Eye
    5、L. LE:Left Eye
    6、BE: Both Eye
    7、V: Vision
    8、S. Sph: Spherical
    9、C. CYL: Cylindrical
    10、X. Ax: Axls
    11、D : Diopter
    12、PD: Pupillary Distance
    13、P. Pr: Prism
    14、Δ :Prism Diopter
    15、BI: Base In
    16、BO: Base Out
    17、BU: Base Up
    18、BD: Base Down
    19、Add: Addtion
    20、PL: Plano
    21、CL: Contact lens
  • Q How to choose the resin lens supplier in China ?

    A There are 10 reasons for you to choose an resin lens supplier in China:

    1.Quality, not doubt for this point.
    2.Competitive price, but not the lower the better. Suitable price is not only for quality, but also for the management, service, stability, and so on.
    3.Delivery time is also important. As a kind of consumer goods, resin lens must have good flow. A faster lead time will protect your profit, and greatly improve the efficiency of capital utilization.
    4. Certification, ISO, FDA, CE and so on. It’s very important for the guarantee of service confidence, more than the product.
    5.Service concepts, many Chinese supplier do not care the after-sales service. Such a disaster for oversea clients.
    6.Sales experience in overseas market, which will help you learn more about the market.
    7.Stability of the supply chain. Changing a supplier is not only about the products, but also about the habits of coordination, tech specs of products, applicability of inventory, increasing the risk of cooperation.
    8.Export ability of resin lens. Cooperating with whom have no experience for exporting resin lens, it’s wasting time and money.
    9.Professional team for resin lens exporting.
    10.Excellent company reputation.
  • Q What's your value-added services ?

    A 1. VI OEM design.
    2. Coating design customization..Specification design customization.
    3. Specification design customization
    4. Purchase & Supply of accessories
    5. Packaging & Logistics
  • Q What about the delivery date for my order ?



    For following products,the delivery time is

    1. Free Sample to be delivered within 2 days.
    2. RX lens to be delivered within 3 days.
    3. Mass order of stock lens to be delivered within 3-4 weeks.
    4. With 24 hours we’ll inform the delivery date, once receiving an order from you.
  • Q How long should I update my resin lens ?

    A It is advisable to update the resin lens every 2-3 years, especially for teenagers and elderly. Because their vision change quickly, doctor suggest they should be checked the hospital once a year, according to the change of the refractive, and then update the resin lens.
    Also, the lens once scratches will affect optical coorection performance. In the addition to the regular optometry, we should pay attention to protect the lenses, avoiding the surface abrasion,move it gently, don't take with sharp objects and clean the lens regularly with cleaning liquid.
  • Q Who do I contact with the after-service ?

    A You can contact the salesman directly, or send your requirement to our service department by email info@swanoptical.com
  • Q How about the warranty policy ?

    A As resin lens are affected by temperature, the influence of storage environment, easy be yellowed. But SWAN Optical resin lens can keep warranty in 18 months.
  • Q How can I buy RX lens ?

    A There are following methods to buy our RX lens:
    1. Buy our RX lens from our local agent.
    2. If there's no agent in your area, you can buy RX lens from us directly.
    3. Contact us with online SKYPE/ WhatsApp, Call us, or leave your message on this page: buy RX lens
    4. The lens will be sent within 3 days after receiving your payment.
  • Q How to get Free Sample of resin lens ?

    A We provide free samples for your testing, and all the samples will be sent to you after you fill the following pages, Get free samples





  DongGuZu, GuCun Village, SiTu Town,      DanYang City, JiangSu PR., China


  +86-13912840137

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