As leading sports equipment Manufacturer and Retailer we excel in delivering best in class V Rings followed by top notch V Rings. Located in BEIJING, , China we take pride in our technologically advanced production facility, boasting Third Party. Based on increasing demand in V Rings and best quality of our V Rings we have crossed Approx More Than 1 Billion US Dollar annual revenue, owing to Australia,Bangladesh,Spain,India,Sri Lanka export market share reaching US$2.5 Million - US$5 Million of export ratio. Crystal-optech LLC holds 18 Years of export history, established back in 2002 with US$50 Million - US$100 Million initial business capital.