Dongguan Zuolong Machinery Co., Ltd. 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. sewing machine, one of Zuolong Machinery's main products, is deeply favored by customers. With wide application, it can be applied to different industries and fields. Zuolong Machinery's machinery is deeply favored by most customers for the following advantages: reasonable and novel design, compact structure, stable performance, and easy operation and installation. Zuolong Machinery's products are of high quality and great safety. Besides, they are packed tightly and shockproof. Customers can rest assured to purchase the products. You are warmly welcome to contact us for details. As one of our team's multiple product series, thread trimming machine series enjoy a relatively high recognition in the market.

The sewing machine used in the factory is not online. what's the matter? There are several reasons: 1.The needle is biased or does not reach the top of the needle Pavilion at all.2.Check whether the model of the needle is correct.3.The Needle and the shuttle bed below are not in good contact (should be the key point ),Adjustment method: lift the head,Saw the two screws of the shuttle bed unscrew it,Then transfer the needle to the bottom of the shuttle bed and match the small tip of the shuttle bed with the needle eye (the small tip can be slightly higher than the needle eye). it is appropriate to keep the distance between the small tip and the needle gently tight.Then tighten the screw and OK.

At present, which brand of gasoline cutting machine (gasoline welding machine) is truly self-produced? First of all,It is recommended that you not be too entangled in the 'patent.Because,I feel that China's patent review is not very rigorous.Many of these patents belong to 'invalid patents' or 'useless patents '.Taking the patent of gasoline cutting machine as an example,Most patents do not help the performance of gasoline cutting,Some patents protect only one thread size (this patent actually covers the thread size used by the gas cutting tool ),So if it's really investigated,This patent is 'invalid.Moreover,It does not depend on the performance of gasoline cutting (such as: oil supply, oil control, gasification.So whether gasoline cutting is good or not is not who has a patent,But performance.Of course,Good performance must be patented,We also firmly oppose the imitation of other people's patented products,We should respect the wise labor of others.Although patents are messy,But just look at whether the in