What's the diode laser products?and the function of diode laser peoducts?

Diode laser products is a diode is a two-terminal electronic component with asymmetric transfer characteristic, with low (ideally zero) resistance to current flow in one direction, and high (ideally infinite) resistance in the other. A semiconductor diode, the most common type today, is a crystalline piece of semiconductor material with a p-n junction connected to two electrical terminals.[1] A vacuum tube diode, now rarely used except in some high-power technologies and by enthusiasts, is a vacuum tube with two electrodes, a plate (anode) and cathode.
The most common function of a diode is to allow an electric current to pass in one direction while blocking current in the opposite direction Thus, the diode can be viewed as an electronic version of a check valve. This unidirectional behavior is called rectification, and is used to convert alternating current to direct current, including extraction of modulation from radio,the source from http://www.top-beauty-salons.com/index.php/category/products/diode-laser-products/

Diode Lasers are actually ordinary LED's.  They emit coherent monochrhomatic light at a specific amplitude which varies by design from femtowatts (as used in passive recognition systems) to over 35 megawatts (used in satellite laser weapon systems).  This variety of light "sticks together" unlike other varieties of electromagnetic radiation.

These lasers are used in household eletronic devices, security systems, thermometers, and direction finding equipment.  Laser navigation systems were online fifteen years before GPS became a cost effective alternative. 

Laser rangefinders are used in architecture and construction virtually to the exclusion of all other techniques.  One may find a true level across a construction site more precisely than with spirit levels, because laser levels do not consider the curvature of the earth. 

For more information I have provided a link to Wikipedia which I believe will give you a basic understanding.

www.wikipedia.org/wiki/LED

The diode laser products are the made from laser diode machine...

The products are the engraving objects, marking on different things like watch, jewellery and much more...

For more details on the diode laser machine you can visit the needham-laser also....