Adhesives, loctite E-30CL, paste or glue are materials that are used for sticking.  Adhesives play crucial roles in our everyday life.  It is almost as if our daily activities will be paralyzed if these adhesives are not available.  
There are kinds of adhesives that are available on the market.  You should not find it any difficulty locating them for your purchases.  What you always need to remember, though, is that all adhesives are designed for use with different services.  What is more, the strength of these adhesives vary.  

And of all the adhesives, synthetic resin glues are considered the toughest.  And durable.  They harden so well and smoothly.  They can be used on different hard surfaces including metals.  Synthetic glue can also stick both porous and non-porous materials.  They also become rock hard and would not shrink at any one time.  If you need them for your sticking; you will always find them in tubes.  

Then there are the polyester resins.  They resemble epoxies but will not shrink easily.  When they hardened, they are very good for glass fiber.  

Silicones are also commonly used adhesives.  Silicones can stand high temperatures.  They are also resistant to water and are often used for electric cabling.  

Then there are the adhesives that are derived from the animal products.  Common ones are the glue cakes that are made from the hides and bones.  Then there is the famous gelatin that is even used for cooking.  You can use animal adhesive on fabrics, cards, and even papers.  

Then there are aerosols adhesives as well.  They are typically available in low or moderate viscosity.  They are usually applied on a surface by spraying on the surface fast so that they adhesive droplets land on the intended surface before they dry up.  Most of these aerosols adhesives are discharged using a spray gun or an aerosol can.  

Designers often make use of these aerosol adhesives to cause an immediate bond on the surface which they can reposition before it gets sticky.  One great advantage with the aerosol adhesive is that they are clear, stain-free and are very fine mist when they are sprayed.  Even such a brittle paper can be sprayed, and it will not tear.  One key drawback is that you should always spray in a ventilated area as the aerosol is highly combustible.  You also need to be cautious not to inhale the fumes - you will expose your health to hazards.  

The polyester resins are utilized in glass, plastics, and metals.  Cellulose adhesives can be used in polystyrene, plastics, card, and paper.  Urethanes can be used to stick metals, rubber, leather, wood, and plastics.  Lastly, the epoxy resins can be used to fix metals, stones, glasses, plastics and even wood.  Vegetable glues will glue papers and cards.

You can learn more on Loctite adhesives on eezee article.