1.when you see blistering, cut and pierce the bubble with a negative angle scraper or shovel in time, make sure that there are no bubbles at the 2.fill the sewing agent, flatten it with a tungsten bar again, compact it, and then scrape it flat with a scraper. 
Second, when sewing, do not cut, hit vertically as far as possible, so that as many materials as possible into the gap. 
3. to choose formal, quality guaranteed beauty sewing products.

All the Suoer products are packed with the most advanced front sealing cans in the world to ensure that the materials do not bubble up in construction and are convenient for construction. The products on the market generally use the rear sealing technology, the sealing degree is not enough, easy to enter the air, easy to blister. 
Suermei sewing, which originated from Sinoer Group in Hamburg, Germany, was founded in 1978! Since entering the country, it has been well received, almost to the stringent German 21 construction technology standards, so that every consumer can rest assured. At the same time, it has the brand, product quality, service system, joining support is also an ideal choice to start a business.