Langfang Sandi Electric Tricycle Co., Ltd. is a domestic enterprise, which is next to Beijing and Tianjin. Our company has convenient transportation. Our company covers 20 thousand square meters. Since 1999, we have developed and produced "Xin Ge" and "Xin Hang" two series of electro-tricycles. Our products have gained many certificates of honor awarded by the national ministries and provincial and municipal governments. We integrate research, development, production and sales together. We have powerful technology, advanced equipment, complete test instrument and...