Recently, the National Center for Quality Supervision, Inspection and Testing of Laboratories in Wenzhou opened to the public. Wenzhou Quality Inspection Institute invited business representatives, industry associations and other people from all walks of life to visit the footwear and leather labs. In the laboratory, staff of the quality inspection institute introduced the use of various testing instruments. According to the staff, since the establishment of the National Footwear Inspection Center of the Quality Inspection Institute, it has not only prompted the Wenzhou shoe industry to gradually move closer to high quality, but also greatly enhanced Wenzhou's social influence and popularity as a “Chinese shoe capitalâ€, and has attracted Northeastern, Jiangsu, and Lishui and other merchants come to Wenzhou to invest and set up factories, which promotes the industrial agglomeration effect. Industrial butterfly valves are wildly used in all type of industrial pipelines, such as power stataion, petrochemical, oil refinery, natual gas,water treatment ect. Centreline butterfly valve, double offset butterfly valve, triple offset butterflyvalve, CW butterfly valve large diameter butterfly valve and rubber lined butterfly valve with ASME & DIN standard are commonly used by customer. Industrial butterfly valve we provided are with soft and metal seal type and valve size are from 12 inch to 120 inch(DN300-DN3000) matching pressure from class 150 to class 2500(PN10-PN420) which are suitable for operating in the working media temperature from -29℃ to 593℃, as well as material in Cast iron, ductile cast iron, carbon steel, stainless steel, alloy steel and duplex steel in casting material. Butterfly Valve,Cw Butterfly Valve,Larger Diameter Butterfly Valve,Brass Ball Valve Yongjia South Trading Co.,Ltd , https://www.n-lvalve.com
The scope of testing of the National Shoe Testing Center covers China's footwear and its raw and auxiliary materials, leather, artificial leather, rubber and plastic products and other industries. It has undertaken the quality inspection of most footwear products in Wenzhou and surrounding areas, and responded to the international technicality of Wenzhou Shoe Industry. Trade barriers have greatly helped improve the international competitiveness of Wenzhou shoe leather products.