The 300/40 is a new design, through excellent processing technology and high-quality raw materials, the performance of 300/40 up to a higher standard. We are perfect for every detail of the 300/40, guarantee the quality level, so as to bring you the perfect product experience. Jiangsu Grand Cable Co., Ltd. is a professional China 300/40 manufacturer and supplier, if you are looking for the best 300/40 with low price, consult us now!