K9 blank crystal price manufacturers

When sourcing K9 blank crystals, the primary focus should be on optical clarity and material purity. K9 crystal is a Chinese optical borosilicate glass crown known for its high refractive index and low inclusion rate. Ensure the blanks are free of bubbles, scratches, and internal streaks, as these defects will be magnified during laser engraving or sandblasting. Specify the polishing grade (usually 40/20 or 60/40 scratch-dig) to ensure a mirror-like finish on all surfaces.

Authentic K9 crystal has a density of approximately 2.45g/cm³ and a high lead-free composition that provides superior light transmission. You should request refractive index reports (target ~1.51) and perform a 'sound test'; K9 crystal produces a clear, metallic ring when tapped, unlike the dull thud of ordinary soda-lime glass. Additionally, check for UV resistance to ensure the crystal does not yellow over time when exposed to sunlight.

Since these are 'blanks,' your supplier must provide precise dimensional tolerances (typically ±0.05mm to ±0.1mm) to ensure they fit into your engraving machines or LED bases. Look for suppliers who offer beveled edge options, 2D/3D internal laser engraving compatibility, and various shapes such as cubes, icebergs, or diamonds. High-end suppliers on Made-in-China.com often provide custom mold services for unique geometric requirements.

For international trade, ensure the products comply with REACH and RoHS standards, confirming the material is lead-free and safe for consumer handling. If the crystals are intended for awards or gifts in the US market, they should meet California Proposition 65 requirements. Always ask for SGS or Intertek certification reports to verify the chemical composition of the glass batch.

K9 crystals are heavy and fragile. You must mandate individual bubble wrap or foam-lined gift boxes for each unit. For bulk shipments, require double-walled corrugated outer cartons and palletization with plastic wrap and corner protectors. It is highly recommended to use FOB terms and secure marine/air cargo insurance that covers 'breakage' specifically.

Price in this industry is heavily driven by volume and weight. Negotiate based on a tiered pricing structure (e.g., 500, 1000, and 5000 units). Since K9 crystal is a raw material, you can often achieve a 10-20% discount by committing to a long-term supply contract. Mention that you are comparing quotes from verified Gold Members on Made-in-China.com to leverage competitive bidding.

Always use Secured Trading Services provided by reputable platforms like Made-in-China.com to protect your payment until the goods are shipped. Conduct a third-party pre-shipment inspection (PSI) to verify the quantity and quality (checking for chips or cracks) before the final balance is paid. This prevents the high cost and complexity of returning heavy glass products across borders.

K9 blank crystals are typically classified under HS Code 7013 (Glassware used for indoor decoration) or 7020 (Other articles of glass). Be aware that some regions impose anti-dumping duties on specific glass products. Consult with a customs broker to confirm the exact tariff rate for your country to calculate the Total Landed Cost accurately before placing a large order.