Dongguan Zuolong Machinery Co., Ltd. has developed the business in a brand-new way and has won many honorary qualifications in the industry. Now we enjoy a large influence in the industry. Zuolong Machinery's location enjoys traffic convenience with multiple traffic lines passing through. This is conducive to the outward transportation and is the guarantee of timely supply of products. Zuolong Machinery has an excellent team consisting of talents in R&D, production and management. We could provide practical solutions according to actual needs of different customers. Zuolong Machinery is provided with a number of fully automated production lines and a professional R&D and design team. According to customers' needs, we could develop and manufacture machinery that meets their needs. We provide quality OEM/ODM services.

The old-fashioned sewing machine only moves up and down the cloth teeth. what's going on before and after? The shaft is broken.Sewing machines are also called sewing machines or sewing machines,Is to use one or more sewing thread,To form one or more lines on the seam material,A machine that intertwined or stitched one or more layers of seam material.It consists of four parts: head, seat, transmission and accessories.The sewing machine was invented during the first industrial revolution,The main purpose is to reduce the workload of manual sewing in garment factories.In China in the late 1950 s,Sewing machines have become one of the so-called four big pieces.Sewing machine can sew cotton, hemp, silk, hair, artificial fiber and other fabrics and leather, plastic, paper and other products,The stitched lines are neat and beautiful, smooth and firm,Sewing speed, easy to use.

The development trend of sewing machine bending mechanism? Section 4 2005-I. 2005-Section 5 2005-Section 1 2005-I. 2005-Section 2 2005-I. 2005-Section 3 2005-Section 1 2005-I. 2005-Section 3 2005-I. 2005-Section 1 2005-I. 2005-Section 2 2005-I. 2005-Section 3 2005-I. 2005-Section 4 2005-I. 2005-Section 5 2005-Section 1 2005-I. 2005-Section 2 2005-I. 2005-Section 3 2005-I. 2005-Section 4 2005-I. 2005-Section 5 2005-I. 2005-Section 6 2005-Section 7 2005-I. 2005-Two, 2005-Three, 2005-Four, 2005-Section 8 2005-Section 1 2005-I. 2005-Section 2 2005-Section 3 2005-Section 4 2005-Section 5 2005-Section 6 2005-Section 1 2005-Section 2 2005-Section 3 2005-Section 4 2005-Section 5 2005-Section 6 2005-Section 7 2005-Section 8 2005-Chapter 11th 2009-Section 2 2009-I. 2009-Two, 2009-Three, 2009-Four, 2009-The main contents are: main business activities (or m

Sewage purification treatment The so-called sewage purification treatment,The effluent quality of the treated sewage is very good,Its indicators should at least meet the above requirements for reuse,It is called sewage purification treatment.The traditional sewage treatment process is adopted,After the sewage is treated,To achieve the effect of purification treatment,The treatment process generally adopts a treatment process of three or more levels.The first-stage process is pretreatment,The second level is biochemical treatment,The third level is deep processing,Only in this way,In order to completely remove the pollutants in the sewage,The quality of the effluent reaches the level of purification.There are many pretreatment processes,Generally, depending on the water quality,The most commonly used methods are horizontal sand sink, vertical flow sand sink, Cyclone sand sink, aeration sand sink, horizontal flow sedimentation tank, vertical flow sedimentation tank, radial flow sed