Sale of corrugated boxes and corrugated cardboard from the manufacturer. Affordable prices. High quality. Wholesale and Retail. Corrugated box. Withstands loads up to 20 kg. Dense. Three-layer. Convenient to use and recycle. Corrugated cardboard is the most popular raw material for the manufacture of packaging materials. The main parameter of the cardboard is its brand. The quality of the packaging depends on the brand of cardboard, as well as the ability of the container to withstand certain loads and protect the cargo from moisture. Corrugated board is divided into: two-layer, three-layer, five-layer and seven-layer. Let's decipher each character in the corrugated cardboard brand. Each letter and number in the brand name has its own meaning. The letter "T" means that the corrugated board has three layers, the number "2" means that there are two flat layers in the board. The second number characterizes the quality of raw materials (from 1 to 7): the higher the number, the better the raw materials. Therefore, the quality of corrugated board T-23 is better than T-21. The T-23 has a higher price segment. The brand of five-layer corrugated board is deciphered as follows: P-31 (P-five-layer, 3 - the number of flat layers, 1 - quality).