Shandong International White Cardboard
White cardboard is generally divided into: blue and white single-sided coated cardboard, white base coated cardboard, and gray base coated cardboard.
Single-layer or multi-layer bonded paper manufactured entirely from bleached chemical pulping and fully sized, suitable for printing and product packaging, and generally has a basis weight of more than 150g/㎡. This kind of cardboard is characterized by high smoothness, good stiffness, neat appearance and good uniformity. Can be used for business cards, menus or similar products.
In the past, some people planned to divide them into paper, cardboard and cardboard based on quantitative quantity; white cardboard has high requirements for whiteness. The whiteness of A grade shall not be less than 92%, B grade shall not be less than 87%, and C grade shall not be less than 82%.
White cardboard is a kind of strong, thick paper with a large basis weight. In the past, some people planned to divide them into paper, cardboard and cardboard based on quantitative quantity; in the early years, in Shanghai ***, white thick paper with a quantitative quantity of about 200g/㎡ (smooth surface, calendered, high stiffness, and some people also called it thin cardboard), called heavy paper. In fact, it is also a kind of paper jam. The most common cardboard is not colored, and is commonly called white cardboard. If colored, it is called colored cardboard according to its color.
The main use of white cardboard is to print business cards, certificates, invitations, covers, monthly desk calendars and postal postcards.
White cardboard has the surname "white", so it has high requirements for whiteness. The whiteness of A grade is not less than 92%, B grade is not less than 87%, and C grade is not less than 82%. If the whiteness exceeds 90%, it will be a bit "bright and dazzling".
White cardboard also requires high stiffness, burst resistance and smoothness (except for white cardboard with embossed patterns), and the paper surface is flat, no strips, spots and other paper diseases, and no warping and deformation are allowed.
| Company Name | Beijing Weiduoduo E-Commerce Co., Ltd. | Country/Region | China |
| Business Type | Retailer | Company Size | 100 |
| Established | October 1, 2025 | ||
| Address | beijing fengtai | ||
| Main Products | Paper Manufacturing, Textiles, and Paper Packaging | ||
Beijing Wdoodoo E-Commerce Co., Ltd. (hereinafter referred to as “Wdoodoo”) is a core subsidiary of Guolian Co., Ltd. Established in August 2016, the company is positioned as an “Internet+” upgrade platform across the entire industrial chain, covering industries such as papermaking and packaging, smart textiles, industrial starch, recycling and environmental protection, rubber, and robotics. Its business scope includes wood chips, bamboo chips, pulp, base paper, paper rolls, industrial starch, cotton, fibers, plastic bottle flakes, yarns, grey fabrics, rubber, and robots.
The company primarily engages in B2B transactions of raw materials and finished products, supported by cloud ERP and cloud logistics systems. Driven by “aggregated procurement” and “supply chain upgrading services,” Wdoodoo actively promotes the development of an industrial Internet e-commerce ecosystem.
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