The 2020 North China Cross-border E-commerce Seller Operation Sharing Conference hosted by the Qingdao Cross-border E-commerce Comprehensive Pilot Zone Service Center was grandly held at Haier Intercontinental. The all-day meeting attracted nearly 600 sellers from North China to gather together to d

Polyurethane foaming machine is the black material (isocyanate, also called crudeMDI) and white material (combined polyether) are fully mixed according to a certain ratio (the conventional ratio is 1:1) Combine the output, the two raw materials after the output react chemically, start to expand and

Precautions and equipment requirements for spraying polyurethane rigid foam in cold storage

The cold spray polyurea and spray gun were shipped to France on August 3, 2020

During the polyurethane foaming process, the foam has shrinkage, crispness, too soft, heartburn, cracking, smoke and other problems. How to analyze the causes.During the polyurethane foaming process, affected by the construction conditions, foaming equipment, construction technology and ambient temp