Reasons for the slow development of the sleeve with compensation in the form of domestic-related, China's economy is currently very difficult to external pressure corrugated compensator much money, mainly due to the monopoly. Government continues to monopolize the most profitable companies sleeve compensator, while external pressure corrugated compensator pictures, by assigning the task of tax resources to further focus to large state-owned enterprises continue to play this game continues, the result will be? Small and medium enterprises sleeve compensation did not earn money outside pressure corrugated compensator wholesale, while the tax has become increasingly important, these people will continue to stay? Lack of social responsibility, resulting in some bad companies in the production process of the metal compensator jerry occur when the product is shoddy compensation phenomenon, this way, the overall quality of compensation will be difficult to market effectively guaranteed. It can be said, in the metal compensator market boom enters the stage downtrend background, product quality problems also began to ferment. External pressure bellows manufacturers, compensation, supply materials provided by Serco Serco Gongyi City Water Supply Materials Co., Ltd. Serco Gongyi City Water Supply Materials Co., Ltd. (www.gyxjbcq.com/) strong, credible, in Zhengzhou, Henan Province of valve industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Serco water into the brilliant material and you work for a better future!