Mobile glass

The primary difference lies in the edge curvature and coverage. 2.5D glass features slightly rounded edges but only covers the flat portion of the screen. 3D glass is chemically or thermally curved to fit smartphones with curved displays perfectly. 9D or higher 'D' ratings are often marketing terms indicating higher density, full-screen coverage, and multi-layer protection including anti-shatter and oleophobic coatings.

You should prioritize products with a 9H hardness rating on the Mohs scale, which ensures resistance against keys and coins. Request third-party lab reports for the 'Drop Test' (usually from 1.2 to 1.5 meters) and the 'Pressure Test' to ensure the glass can withstand impact without shattering into dangerous shards.

Look for a transparency rate of ≥99% to maintain original display clarity. The oleophobic coating is critical; it should have a water contact angle of >110 degrees to effectively resist fingerprints and oil. Additionally, ensure the AB glue (adhesive layer) is from reputable brands like Toyo or Crown to prevent bubbles and 'halo' effects on the edges.

For the EU, ensure the product complies with REACH and RoHS directives, confirming the absence of hazardous substances in the glass and adhesive. For the US market, while less stringent than electronics, ensuring CPSIA compliance for packaging materials is recommended if the product is sold in retail environments.

Mobile glass is highly fragile. You must mandate stiffened outer cartons and individual retail packaging with internal foam padding. For bulk shipments, specify palletization with corner protectors and 'Fragile' labeling. It is highly recommended to use Made-in-China.com's inspection services to verify packing integrity before the balance payment is made.

Focus on the yield rate and defect compensation. Negotiate a defect rate threshold (typically <1%) and agree on a 1:1 replacement policy for any glass that arrives cracked or with adhesive failure. For high-volume orders, leverage the competitive market on Made-in-China.com to request customized silk-screen printing or private label packaging at no extra cost.

Always verify if the supplier is an 'Audited Supplier' on Made-in-China.com, which confirms their factory existence and production capacity. Use Secured Trading services to ensure your funds are only released to the supplier after you have confirmed receipt and quality of the goods.

Due to the high value-to-weight ratio, Air Freight or International Express (DHL/FedEx) is common for small to medium batches to ensure fast turnover. However, for large-scale distribution, Sea Freight (LCL) is significantly cheaper. Ensure your freight forwarder is experienced in customs clearance for 'Accessories' to avoid misclassification and unnecessary duties.