1.Are you a factory or trading company? 
   We are a factory. All the products are designed and manufactured by ourselves.

2.Where is your factory located in?
   Zhuorui Optics Technology Co., Ltd is located in No.33, Balamiao Road,   
   Yuegezhuang, Pinggu District 101200, Beijing, P.R.CHINA.
3.Do you offer samples?
   We could send free samples for your reference, but the buyer should bear the delivery charge. For  
   some expensive samples, samples cost would be necessary.
4.How about the delivery time?
   The delivery time depends on the type of goods you ordered. We will try our best to make an 
   early delivery.

When you receive the package, please first examine the situation of goods. If there is any problems, please feel free to contact us. Your satisfaction is our final pursuit.