As a manufacturer of waterproof and breathable membranes, when every product is produced, the factory must let the quality supervision department carry out a careful inspection of the product. If any product is found to be unqualified, it must not pass. As a manufacturer of waterproof and breathable membranes, the quality requirements for products are relatively high.

　　Some people think that canvas and sailing should appear at the same time, but this is not the case. The history of canvas is extremely long, and canvas was widely used as early as the Roman times. Because canvas is woven with multiple strands, the texture is firm, wear-resistant, dense and thick. At that time, the ancient Romans used it to make wristbands for the training of eagles. The densely woven thick canvas also has good water resistance, and was eventually used by ancient Romans to make march tents. Due to the strong and wear-resistant characteristics of canvas, the first modern parachute was made of canvas, and the first modern soccer ball was made of rubber core canvas. The world's first oil painting appeared in the 15th century. The canvas is also thick Wear-resistant canvas. At the beginning of the 16th century, canvas was brought by the merchants to the American continent. In the early days of immigration to the Americas on the European continent, canvas bags became the favorite of people who yearned for freedom and adventurous spirit. Later, the world's first 　　jeans were also sewn by canvas. Then, the birth of the first pair of canvas shoes in the world marked the development of canvas to a new era, and canvas began to be closer to people's lives. In China in the 1960s and 1970s, military green canvas schoolbags became a fashion item for everyone. With the advancement of science and technology, textile technology has greatly improved, the types of canvas have gradually increased, and their applications have become more widespread. In the 21st century, we have entered the era of environmental protection. Canvas is more recognized as an environmentally friendly fabric. Although the canvas has not shown enough and shows off, it is more casual and low-key. The new canvas concept will carry a new Fashion concept, step into the fashion field.