Dongguan Zuolong Machinery Co., Ltd. is the leading manufacturers in cordless electric scissors in China. Zuolong Machinery always sticks to the business philosophy of 'efficient cooperation and mutual benefit'. We adhere to the enterprise spirit, which is to be hard-working, pragmatic and diligent. It would be our pleasure to partner with you and together, we can create a better tomorrow. Zuolong Machinery's cordless electric scissors can be used in multiple scenes. The sewing machine series is presented as follows. It is quality certified while providing smarter performance and functionality. This machine is designed to prevent overload and save time. This product is widely used and popular in the specific customer segment. Its trimmer blades are titanium coated, thus it is resistant to rust. We have many years of experience in production and sales. And if you are interested in our products, feel free to contact us.

Singer sewing machine This is really hard to check,Here are some information about the SINGER,For your reference.But I guess this machine has a history of at least 50 years.1851,An American named leechac merisse Shengjia invented a machine instead of manual sewing-Sewing machine.This revolutionary invention was called 'one of the four great inventions to change human life' by Dr. Needham, a British contemporary world technology historian.1853,The first sewing machine in New York City factory start production.Two years later,I won the first prize at the World Fair in Paris, France.The same year,The US Shengjia company pioneered the 'installment payment' plan to increase sales,Become the founder of this sales method in the world,It has a profound impact on the subsequent consumer market.10 years later,The U.S. winning company has held 22 patents.The annual sales of sewing machines reach 20 thousand units.1867,Shengjia became the first multinational industrial company in the United States,Factory product

What are the threaded interfaces of the pressure gauge? According to the standard of pressure gauge in China, the thread of pressure gauge joint is made of public thread, and should conform to the regulations in the following table.50, 60 M14 × 1.100,150,200,250 M20 × 1.Since China's reform and opening up,Pressure gauge on imported production process equipment,In addition to the various pressure measurement units,The connection thread of the pressure gauge joint is also diverse.In addition,Of the millions of pressure gauges exported by China every year,The pressure gauge connection thread required by foreign investors is rarely a public thread,Is the same thread,The thread codes for pressure gauges in China, Japan and the UK are also different.It is like a 55 ° 1/4 'cone pipe thread,The code in our old standard is called 'ZG1/4 ',The code in the new standard is called 'R1/4 ',The British standard is also called 'R1/4 ',The code in the Japanese standard is 'PT1/4 '.The following lists the Chinese and