Stylish Medium Envelope for Business Communication

Customized envelope product parameters   1、 Material specifications   （1） Kraft paper   • Weight: 80-250g/m ², with lower weights of 80-120g/m ² being lightweight and suitable for daily mail delivery; 150-250g/m ² kraft paper has high strength and good toughness, can withstand heavy documents, is wear-resistant and durable, and has a strong retro texture.   • Environmental friendliness: Made from natural wood pulp, recyclable and biodegradable, in line with environmental protection concepts, safe and reliable to use.   Waterproof: Ordinary kraft paper has weaker waterproof properties, but after special waterproof treatment, it can resist rainwater invasion to a certain extent and protect internal documents.   （2） Copperplate paper   Weight: 105-300g/m ², 105-157g/m ² Copperplate paper has a smooth surface and strong color expression, suitable for printing colorful patterns and text; 200-300g/m ² with a crisp texture, suitable for high-end invitations, etc., with a premium texture.…

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