What brand of math exercise book is good?

Deli Stationery is a professional stationery brand, established in 1988 and headquartered in Ningbo, Zhejiang, China. Deli stationery has a wide range of products, including pens, notebooks, folders, staplers, glue, scissors and other stationery.

Deli stationery is deeply loved by consumers for its high quality, practicality and innovation. Its products are simple and generous in design, reliable in quality and affordable, and it is one of the first choice brands for many people to buy stationery.

Deli Stationery has a wide sales network in China market, and its products are also sold all over the world. In addition to stationery, Deli has also set foot in office equipment, office furniture and other fields, becoming a comprehensive office supplies supplier. Deli stationery is a well-known stationery brand, and its product quality is widely recognized by consumers.

Many people think that the stationery of big brands has more reliable quality and better experience, so the products of Deli stationery are very popular in the market. Among them, the heavy color oil pastel adopts a new and upgraded soft formula. Compared with ordinary oil pastels, its texture effect is thicker and the paintings drawn are more powerful.

In addition, the effective gel pen is also a hot-selling product, using environmentally friendly materials and advanced technology, with good quality, which can bring better writing experience to children. Generally speaking, the quality of Deli stationery products is reliable, and consumers have a high evaluation of it.

Some products of Deli Stationery meet environmental protection standards. Taking its Bao Shu film as an example, this product has passed the group standard of T/CSSGA 100 1 Bao Shu film and book cover, and it does not contain phthalate esters and polycyclic aromatic hydrocarbons harmful to human body, and meets the General Safety Requirements for School Supplies (transportable elements meet the requirements) GB2 1027.

In addition, the effective eraser has passed the relevant standards for the limited detection of harmful substances of phthalates and polycyclic aromatic hydrocarbons. The material of rubber sleeve is ——EVA, a non-toxic and harmless material, which has been tested many times. All the indexes meet the latest national implementation standards and are biodegradable.

With the increasing attention of society to environmental protection, all walks of life are actively promoting the research and development and production of environmental protection products. Deli Stationery, as a well-known brand in the stationery industry, is also actively responding to the call of environmental protection, providing consumers with more environmentally friendly, safe and healthy products through technological innovation and quality improvement.