This establishment has been in continuous operation with over 30 years of experience in designing and manufacturing precision machinery, molds, and industrial parts, and since the beginning of 1397 (sh), which was called the Year of Support for Domestic Production, it has embarked on the construction and reverse engineering of a widely used wheelchair project that has been largely endorsed by the country's veterans with spinal cord injuries; And it has received much attention due to the quality and superiority of the product over the similar foreign models. Wheelchair Features: 1- Significant weight loss compared to similar models 2- Portability of components for ease of movement 3- Reasonable price compared to similar foreign models 4- One-year warranty 5- Five years of parts supply, and after-sales service

In order to better investigate the role of deep grooves created on the stretch of silk fibers, imaging of the cross-sectional area of the films as well as the patterned surface of the 30/70 monolayer sample, the bilayer 70/30-alginate sample without the drug, and the bilayer 70/30-alginate sample with the ascorbic acid drug, were performed by scanning electron microscopy. As shown in Figure 4-18, the silk fibrils in all three samples were stretched along the grooves, and a good bond was established between this layer containing the patterned silk and alginate substrate, with or without the drug. Figure 18-4 (b) shows the 30/70 film made below with a layer of alginate on it.