Our company since its inception, always regards product quality as enterprise life, continuously improve production technology, improve product quality and continuously strengthen enterprise total quality management, in strict accordance with the national standard ISO 9001:2000 for rehology, Sulfide Content Tester , Oil Well Additives , Cement Liquid Additives ,Swell Meter . "Quality", "honesty" and "service" is our principle. Our loyalty and commitments remain respectfully at your service. Contact Us Today For further information, contact us now. The product will supply to all over the world, such as Europe, America, Australia,Sri Lanka , Philippines ,Madrid , Washington .All these products are manufactured in our factory located in China. So we can guarantee our quality seriously and availably. Within these four years we sell not only our products but also our service to clients throughout the world.