上凹三层夹(平成女孩)

两侧密封 L 型上方三层凹槽设计的PP文件夹，主要特点是具备三层独立收纳空间，可以有效分类存放A4文件，方便文件的管理和查找。此类PP文件夹多以雾面或透明PP材质制成，质感佳且耐用，封边通常採用超音波密封技术以防止文件外漏。

多层设计尤其适合办公室、补教业、学校等需要多分类文件存放的场合，且常见于OEM订制服务，可以根据客户需求印刷品牌logo及特殊设计，满足企业宣传需求。

关于OEM设计，多数厂商提供客制化印刷与设计服务，能配合客户指定的尺寸、层数、开口方向及封面图案，甚至可结合双面用途，如L型加U型夹合一设计，提升收纳灵活性与功能性。

以下是该类产品的关键点：

三层独立收纳槽设计，方便分类文件。

适合存放标准A4尺寸文件。

使用PP材质，具耐用、透亮或雾面质感。

接受OEM/ODM订制，可客制外观、尺寸与品牌印刷。

适用对象包括企业、学校、补教业及办公室。

部分设计结合双面L型与U型夹功能，增加收纳空间与便利。

这类产品可提供方便的文件管理及推广企业形象的实用解决方案。

The PP folder with sealed sides and an L-shaped design featuring three upper grooves primarily offers three independent storage compartments, allowing effective classification and storage of A4 documents for easy management and retrieval. These PP folders are typically made from matte or transparent PP material, which provides good texture and durability. The edges are usually sealed using ultrasonic welding to prevent document leakage.

The multi-layer design is especially suitable for offices, tutoring centers, schools, and other settings requiring multiple document classifications. It is commonly available for OEM customization, with options to print brand logos and special designs to meet corporate promotional needs.

Regarding OEM design, most manufacturers offer custom printing and design services, accommodating client specifications for dimensions, layers, opening directions, and cover patterns. Some even combine double-sided functionalities, such as integrating L-shaped and U-shaped folders, enhancing storage flexibility and functionality.

Key features of this product include:

Three independent storage compartments for organized document classification.

Suitable for standard A4-sized documents.

Made from durable PP material with transparent or matte finish.

Supports OEM/ODM customization for appearance, size, and brand printing.

Suitable for businesses, schools, tutoring centers, and offices.

Some designs combine double-sided L-shaped and U-shaped folder functions for increased storage and convenience.

This type of product offers a practical solution for efficient document management and corporate image promotion.