Indonesia as one of Tropical country have around 4000 trees species and 260 among of these utilize for Industrial,, construction and others.
For commercial use, there are 3 parties who commonly handles and utilize.
First is Government in these regards through Perhutani, Private Wood Industries and society  micro/ small businesses.
Some of Hardwood type or species which use for commercial utilizing are Bangkirai Wood (Yellow Balau), Merbau Wood, Teak Wood and other. Hardwood has a solid wood characters, ductile, reliable, High-strength are the Superiorities.
All of those utilization must have Permit in forms of Certificate (SVLK) before they utilize the wood for their business, additionally for export business.
This Certificate is raising in order to keep sustainability of the forest and it’s ecosystem, especially of Hardwood types
Those Hardwood are made into Decking, Fencing, Beam, s4s, TnG Flooring, Door Jamb, etc, and exported to many countries through woodworking industry.