1. Distinguish Method Grade A: knots are not allowed; Grade B：Quantity of knots per pc: 1-3pcs and the diameter of knots whose color are black is within 8mm and diameter of knots whose color are nearly same as veneer is within 10mm; Grade C: Quantity of knots per pc: 1-3pcs and the diameter of knots whose color are black is within 20mm and diameter of knots whose color are nearly same as veneer is within 25mm; In addition, 20% of white edge of plank width is allowed and medium color variation is allowed; Grade D: Quantity of knots per pc: 1-3pcs and the diameter of knots whose color are black is within 30mm and diameter of knots whose color are nearly same as veneer is unlimited; In addition, length of crack is within 30cm and severe color variation is allowed;
Unilin Engineered Flooring
Smooth Surface Engineered Flooring
T&G Engineered Flooring
Hand-scraped Brushed Engineered Flooring
CDE engineered flooring
Light Wire-Brushed Engineered Flooring
ABCD engineered flooring
AB engineered flooring
ABC engineered flooring
| Flooring Type | Prefinished | Species | Maple/Hard Maple |
| Color | Brown | Shade | Medium/Neutral Shade |
| Finish Type | Urethane | Gloss Level | Low-Gloss |
| Application | Residential | Core Type | Multi-Ply |
| Profile | Tongue & Groove | Edge Type | French Bleed |
| Maximum Length (in.) | 48 | Minimum Length (in.) | 20 |
| Average length (in.) | 33 | Width (in.) | 5 |
| Thickness (in.) | 0.55 | Radiant Heat Compatible | No |
| Below Grade | Yes | Installation | Floating, Glue Down, Nail Down, Staple Down |
| Certification | CARB II | Wear Layer Thickness (mm) | 3 |
| Surface Finish | Distressed, Handscraped | Finish Warranty (in years) | 25 years |
| Structural Warranty (in years) | 25 Years | Country of Origin | China |
| Packaging Dimensions (inches) | Height: 4.75 Length: 84 Width: 5 | Product Dimensions | Height: 9/16" Length: 15 3/4 - 47 1/4" Width: 5" |
| Sqft / Box | 17.5 | Proposition 65 | Attention California Residents |
Engineered hardwood floors is based on poplar, willow or eucalyptus multi-layer boards, and the surface base layer selects natural hardwood oak, walnut, Ash, Teak and other materials as the panel. After coating with resin glue, it passes through high temperature and pressure in a hot press Made. Floors Production Process: The First step: The choice of wood types and grades for the substrate layer, the commonly used substrate layers are pure eucalyptus, poplar eucalyptus, eucalyptus and birch; grades B1 and B2 The second step: Rotate the log into 1.5mm thick and undamaged sheets, and then dry them third step: In order to ensure the quality of the substrate layer, professionals must be selected and classified according to thickness, color, stuttering, damage, etc. the fourth step: Glue-coated core board: 8-10 layers of glue-coated thin solid wood core boards are arranged in an orderly crisscross pattern and bonded together to change the original stretching direction of wood fibers. the fifth step: Through the hot press, the core board and glue are fully integrated and pasted. The sixth step: The base material is sanded with a fixed thickness. The surface and bottom of the floor substrate are sanded with a fixed thickness sander to ensure the flatness and smoothness of the board surface and provide an important guarantee for bark pressing Step Seven: Substrate sorting and health preservation: After sanding, after selecting and removing defective products, the qualified products are allowed to stand for 15-20 days to release the energy of the substrate layer and make the quality more stable. The eighth step: The solid wood veneer is selected, classified according to the grade, and then the moisture content is adjusted according to the climate. Step 9: Paste the solid wood bark and the substrate layer with glue, and then put them into a hot press for pressing. The tenth step: Continue to keep healthy for 15-20 days to release energy The eleventh step: Floor cutting and grooving, all common ones are T&G, Unilin, Valinge, Drop The twelfth step: Paint and packaging After removing the dust, the grooved floor will pass through the paint spraying equipment. After six primers and three top coats, the packaging is sorted.