"Marine VHF radio refers to the radio frequency range between 156.0 and 174 MHz, inclusive. 
The ""VHF"" signifies the very high frequency of the range. In the official language of the International Telecommunication Union the band is called the VHF maritime mobile band. In some countries additional channels are used, such as the L and F channels for leisure and fishing vessels in the Nordic countries (at 155.5–155.825 MHz)."
A solenoid valve is an electromechanically operated valve. Solenoid valve is used to control the fluid and gas automatic based components, belonging to the actuator; the valve is controlled by an electric current through a solenoid: in the case of a two-port valve the flow is switched on or off; in the case of a three-port valve, the outflow is switched between the two outlet ports. Multiple solenoid valves can be placed together on a manifold.  
Calcium carbonate is composed of three elements which are of particular importance for all organic and inorganic material on our planet: carbon, oxygen and calcium. Calcium carbonate (CaCO3) is a white solid, is non-toxic and odorless. Calcium Carbonate (CaCO3) is an inorganic mineral that finds extensive use as functional filler in the production of plastics, paper, and rubber. Along with talc and kaolin, the mineral is extensively used in metalloid mineral applications. 
This report studies the Biotin market, Biotin is a water-soluble B-vitamin, also called vitamin B7 and formerly known as vitamin H or coenzyme R. It is composed of a ureido ring fused with a tetrahydrothiophene ring. A valeric acid substituent is attached to one of the carbon atoms of the tetrahydrothiophene ring. Biotin is a coenzyme for carboxylase enzymes, involved in the synthesis of fatty acids, isoleucine, and valine, and in gluconeogenesis.
Slot Machines are casino gambling machines with three or more reels which spin when a button is pushed. Slot Machines are also known as one-armed bandits because they were originally operated by one lever on the side of the machine as opposed to a button on the front panel, and because of their ability to leave the player in debt and impoverished

Aluminum fluoride (AlF3) is a white powder, which is mainly used as an additive for the production of primary Aluminum metal. It essentially lowers the melting point of the alumina feed and together with cryolite; it increases the electrolyte's conductivity of the solution, reducing the electric power consumption. Aluminum fluoride is also used as catalyst of organic synthesis and materials of synthetic cryolite.