35mm low density no formaldehyde soft board - 35mm

The raw material of our products
The raw material of our board is from straw and stalks such as rice straw, wheat straw, cotton stalk, reed stalk, rape stalk, hemp stalk, the branches of fruit tree etc. which is can be used as both PB and MDF, is also the best substitute for the wood-based board.




Wanhua Ecoboard reduces forest clear-cutting, air pollution and landfill use. The sorghum stalks used in the manufacture of Wanhua board are a rapidly renewable resource left after the edible portion of the plant is harvested.
Wanhua's product contained no-added formaldehyde, used surplus wheat straw fibre, machined easily and was manufactured in China. For furniture manufacturing the equivalent replacement panel is an eco-friendly, medium-density fibre board (MDF) - plywood are expensive and have edge-sealing issues, as do particle boards.




We commit ourselves to:
No release of formaldehyde, and reduce the harm to human body to zero.
No pollution in the production process, and reduce the social detriment to zero.
No felling trees, and reduce the damage to nature to zero.




Door Panel Features

Wanhua door core is a rigid, lightweight door core that offers a range of benefits, most notably being its fire resistance when used in both model and flush interior doors.

• Panel rigidity improves door stability
• Premium solid core feel yet more weight efficient
• Increases door fire resistance (compared to hollow core)
• High STC value adds resistance to noise transmission
• LEED credits - 97% certified recycled content contributes green rating system value
• No added formaldehyde (exceeds CARB standards)
• Lower weight offers better handling, productivity and shipping efficiency than traditional core
• Lower density reduces tool and machine wear
• Many styles and thicknesses available
• Easily processed , improving yield and reducing losses
• Two sheets of door core can be made into five doors which offers a superb cost advantage.
• Can be pasted directly with wood skin which reduces the quantity of surface decoration.
• Water resistant
• Fire retardant - standard 20 min non rated
• Special Fire retardant - 30 min - 60 min rated
• Much lighter and better strength than normal door
• Approved for use in 20-minute fire-rated 1 3/4" door assemblies per Intertek Testing Services*




*Tested in accordance with UBC 7-2 (1997); Testing Standards for Swinging Fire Doors; UL 10B (2008) and UL 10C (2001); Fire Tests of Door Assemblies; NFPA 252 (2008); Standard Methods for Fire Tests of Door Assemblies; and ASTM E2074 (2004) Standard Method of Fire Tests of Door Assemblies.

Thickness 1.366-1.389” 1.563-1.586”
Density,(lb/cf) 19 19
Weight,(lbs/msf) 1765 2350
Modulus of Rupture,(min avg psi) 225 225
Transverse Strength(lbf) 50 65
Water absorption,(% by volume) 5 5
Tensile Strength,(psi) 150 150
Modulus of Elasticity, (min avg psi) 10000 10000
Internal Bond,(psi) 5 5




Due to the no formaldehyde added resin (NAF) being used, ECO-Board panels have emissions far below the strict E0 European low formaldehyde (LF) and the USA (HUD 24) CARB standards. ECO-Boards are suitable for use in environmentally sensitive areas such as

• nurseries
• children's furniture
• hospitals
• public buildings
• laboratories
• nursing homes
or any domestic application with concern for the living environment and sustainable lifestyle. The Beijing Olympic Gymnasium eco-strawboards were used.