1. INSTALLATION
These installation instructions intend to make a trouble-free floor. Under normal conditions, balance the material over 48 hours before installation. 
Flooring can either be nailed or glued onto the sub floor or floating method or others. The sub floor must be flat clean, dry and sturdy enough to support nails and glue. 
Nail method: With this method each individual plank is firmly fixed in place by screws. While installing pre-finished bamboo flooring, you should nail it at a 45 or 50 degree angle; you should make a hole beforehand.
Glue method (one of the glue methods): You should use a oil based glue or a glue with low water content to glue the floor. If you use high water based glue, it may make the flooring swell because the floor absorbs the water from the glue. 
Floating method: Floating is a method where the planks are glued together along the tongue and groove, but are not in anyway attached to the sub floor. An underlayment padding is needed between the flooring planks and the sub floor to create better floatation and to reduce the walking noise.
When choosing the lacquered flooring, determine the suitable level of space between the boards to accommodate local weather conditions. For example, in humid regions, the floor will need to be installed more loose to leave space for possible expansion. And if the place is near to toilet, kitchen, etc., the floor also need to be installed more loose to leave space for possible expansion.
For un-lacquered flooring, first, thoroughly clean the surface, tongues and grooves. Apply at least three coats of PU paint with an oily cloth. The thickness and shininess of the lacquer should be determined according to the cost and lacquering effect.     
NOTICE:
1-1.5CM SPACE SHOULD LEAVE BETWEEN ALL WALLS AND THE EDGE OF THE FLOOR TO ALLOW FOR EXPANSION, AND COVER THE SPACE WITH THE BAMBOO BASE BOARD.
WOOD SUB FLOORS SHOULD BE INSTALLED OVER CONCRETE FOR BEST RESULTS. 
SELECTION AND PLACEMENT OF EACH PIECE COLOR WILL ENHANCE THE VISUAL EFFECT.