The large size core barrel is a new design, through excellent processing technology and high-quality raw materials, the performance of large size core barrel up to a higher standard. We are perfect for every detail of the large size core barrel, guarantee the quality level, so as to bring you the perfect product experience. Roschen Group Limited. is a professional China large size core barrel manufacturer and supplier, if you are looking for the best large size core barrel with low price, consult us now!