Poly mailer shipping bags are lightweight flexible packaging solutions made from polyethylene designed for efficient and cost effective shipping of small to medium sized items. Xiamen Richer Plastic Co Ltd produces these mailers with a focus on durability waterproofing and user friendly design leveraging its 20 plus years of manufacturing experience and state of the art equipment. The company’s 24 film blowing machines produce LDPE or HDPE films of uniform thickness (15 to 40 microns) ensuring the mailers are thin enough to reduce shipping costs yet strong enough to resist tearing and puncturing. 44 precision cutting machines create consistent sizes from 10x15cm for jewelry to 60x80cm for clothing while 8 printing machines enable clear branding or labeling without compromising the mailers’ flexibility. Key features of Richer Plastic’s poly mailer shipping bags include self adhesive sealing strips that create a secure waterproof seal eliminating the need for tape and saving time for e commerce sellers. The bags’ waterproof construction protects contents from rain moisture and accidental spills making them ideal for shipping apparel accessories electronics and beauty products. For example a leading e commerce platform in Southeast Asia uses these poly mailers to ship cosmetic samples—the waterproof design prevents product leakage while the lightweight material keeps shipping fees low. Another case involves a US based accessory brand that uses 25 micron HDPE poly mailers for shipping sunglasses; the mailers’ rigidity prevents the glasses from being crushed during transit. Quality assurance is a priority with the company adhering to ISO9001 standards. Each batch of poly mailers undergoes tests for tensile strength (to ensure they can withstand pulling during sorting) tear resistance (to avoid damage from sharp edges) and adhesive strength (to confirm the seal remains intact). The 98.7% first pass inspection rate guarantees reliable performance. For clients focused on sustainability Richer Plastic offers recyclable poly mailers made from post consumer recycled PE and biodegradable options that meet EN13432 and ASTM D6400 certifications. These mailers are suitable for a range of users from small online sellers to large retail chains. The company’s annual production capacity of 2500 tons ensures it can meet both small batch orders (starting from 500 units) and large volume requests (up to millions of mailers). Global delivery is available with the Cambodia facility helping to lower tariff costs for international clients. To learn about material options request a sample or discuss order details please contact our team for professional support.