Zhejiang Yiwu Danqing Cultural Supplies Co., Ltd. is a professional enterprise specializing in the operation of art supplies such as primed canvas and canvas frames in China. It integrates research and development, production, sales, and import and export. The main products include primed canvas, canvas frames, easels, canvas stretching pliers, and other art supplies for oil painting series. The company has obtained IS9000 quality management certification. The large-scale coating machine developed by the company is a nationally original dedicated canvas coating machine, capable of mechanically processing and manufacturing extra-wide (width over 3 meters) canvas. The company excels in customized design according to customers' special needs, produces special canvases, undertakes the production of large-scale canvas frames, and has repeatedly designed and produced large-scale linen canvas frames for government and corporate buildings and halls to meet customers' personalized needs. The two huge canvas frames of "Yellow River" and "Mount Taishan" in the main hall of Shandong Mansion are created by Danqing Company. The company's flagship product, Danqing primed canvas, comes in five major categories: linen, cotton linen, cotton, linen cotton, chemical fiber, and blended. The canvas is evenly coated, impermeable, non-deformable, non-cracking, non-toxic, and odorless, with quality meeting international standards. The width ranges from 1.2 meters to 5.2 meters, and the fabric patterns include fine, medium fine, medium, medium coarse, coarse, and extra coarse, suitable for various painting techniques such as hand-painted oil painting, acrylic painting, line drawing, airbrush painting, and portrait painting. The Danqing canvas frame is made of high-quality white pine, with good dryness, no scars, no deformation, groove sockets (with wedge pieces), and a flat and taut surface. The product specifications are complete, suitable for the needs of painters, teachers, students, oil painting enthusiasts, and other different users.