The advantage of our carbon is with stable quality. Implementing the industry's strictest quality control measures has resulted in carbon products that not only meet, but exceed, international standards of excellence, including Japan's JIS, Germany's LG, American's ASTM and Taiwan’s CNS. For individual customer, we keep their standard carbon and original liquid in our laboratory. We always conduct a lab. test before making every shipment. Each shipment can be made only if the quality passes the standard.