4 sets in stock; Manufactured according to latest API Standard; Honghua, BOMCO ... low noise, square parts have a long life save energy, in fact, grinding process is more expensive. Until today, only, ... , will do this process.2. A new CNC grinding machine which made in German is at least 3 million USD, ... 5KG6. G.W: 18.5KG mud pump,F-1000,New arrival! Hot selling precision, Honghua, Kunlun, Baoji, suitable