Dongguan Zuolong Machinery Co., Ltd. will always be determined to forge ahead and persist in research and innovation. Inquire now! Focus on the Production of Thread Trimmer Machine for Years Compared with other products in the same category, Zuolong Machinery's automatic cutting machine has the following advantages. With many years of practical experience, Zuolong Machinery is capable of providing comprehensive and efficient one-stop solutions.

What is the sewing machine for those sewing machines used by garment manufacturers ?? Industrial sewing machine,Industrial sewing machines on speed will be faster,The purpose will be single.Mini sewing machines and household sewing machines are aimed at making up clothes for ordinary families,Some of them use more than one machine but do not fit for a long time.You can also directly search for some brands of industrial sewing machines such as: Fushan, Golden Wheel, standard, Gem, Jack, etc. are generally electric sewing machines,I hope to help you!

For help, I want to buy a true, good and beautiful sewing machine, ask the master to give an opinion First of all, let's check whether the needle is installed correctly,It's better to change a new machine needle.2, if still not,We went on to open the needle,Turn the needle to the lowest position,Look at the rotary shuttle tip from the machine needle 8mm or so.If yes,Then raise the machine needle 2.3mm or so,Look at whether the rotary shuttle tip coincides with the machine needle center.At this time, the needle and the tip of the shuttle can not be too tight,There should be 0.1 gap.3, sometimes the needle has a little bend will also jump the needle, the easiest way is to change the needle to try, if not, when the needle is installed, try a little bit, only a little bit, otherwise, it will break the line. sometimes such a simple operation is also very effective.4. it also has something to do with the thickness of your sewing.Thick things should be thicker,If the needle is fine, it will jump,If somet

What is the density of quartz sand? Density of quartz 2.65,Quartz sand also depends on particle size.Generally considered in 1.6-1.Between 7.The density of quartz sand is 2.2-2.3G/cubic centimeter.That is, the water 2.About 2 times.Sand with a particle size of about 100 mesh,The gap between particles is very small,The overall density is not much lower.2.65 is true density = equivalent to true density under the complete crystal structure of silica.Proportion of quartz 2.65,2.65 is true density = the actual density under the intact crystal structure of silica 1.6 accumulation density = sand with a certain number of mesh,Pile up,There are gaps in the center.Divide the weight of this pile of sand by the volume of the pile.Throw the sand into a measuring cylinder with water,See how much the volume changes,Dividing the sand mass by the volume is the true density. the accumulation density is not used for water.Density of quartz sand,Accumulation density of quartz sand,Proportion of quartz sand,It is al