Shanghai Yitong Hydraulic Machinery Co., Ltd, founded in early 90s, is a foreign trade company. Its subsidiary Shanghai Fende Crimping Machine Manufactory specializes in R&D and manufacturing Fende Crimping Machine. The company absorbs foreign technology and creates sound independent intellectual property right, and based on being innovative domestic and advanced in the world to run business faithfully. The company has the courage to explore and keep improving. It has obtained approval for three items of patent technology. The persistent idea of the company has been recognized by domestic and overseas customers. Its sales volume has been first in China for ten years and hold absolute market share. TRIPLE W (ONE BLACK POT) SHYT (ONE BLACK POT) COM (ONE BLACK POT) CN