タイトルまたは説明
Uvava Trading PTY LTD has evolved in the retail space from a
stalwart warehouse chain to now being able to offer customers a
convenient online shopping hub. Makro offers food, the latest
electronics, houseware, camping and outdoor equipment and even
liquor. A total of *2 Uvava Trading PTY LTD stores trade in South
Africa, bringing convenience and affordability to local households
and businesses. With the ecommerce addition to our digital
offering, customers can now enjoy Makro€™s deals and
value-added services across a broader reach of locations. Our
extensive online shopping range includes the majority of items you
would expect to find in any our store and carries with it the same
ethos we have always maintained. We operate under a low cost/ low
margin trading philosophy, enabling us to deliver quality
merchandise at competitive prices Silica sol blongs to colloid.It
is odorless,tasteless and nontoxic.Its chemical molecular formular
is mSiO2nH2O. Characteristics 1. Since the collid grains are minute
(****0nm) and have relatively large specific surface area,the
grains themelves are colorless and transparent ,so they do not
affect the natural color of the materials to be covered. 2. With
low viscosity,it can soak the places where water soaks,therefore,if
presents excellent dispersion and permeability when being mixed
with other substances. 3. When the moisture contained in silica sol
are evaporated,the colloid grains firmly adhere to the material
surface and the combination of silicon and oxygen is then formed
between grains.It is a good adhesive. Use: 1. Used as the cohesive
agent for various fireproof materials.It has high bonding strength
and high heat-resisting performace(********0&#***1;),etc. 2.
Used in coating industing.It makes the paints firm.It also
possesses features,such as
anti-contamination,dustproof,anti-aging,fireproof,etc. 3. Used in
precision casting of thin covers to increase the cover
trength,improbe the casting smooth finish.Its molding quality is
better than that of water glass.It can be used to replace ethyl
silicate for molding so as to reduce the costs and help improve the
operating conditions. 4. Having large specific surface area,silica
sol can be used for making catalst and as catalyst carrier. 5. Used
in paper-making industry.Can be used as the anti-glutinous agent of
cellophane,pre-treatment agent of photegraphic paper,skidproof
agent of cement bags,etc. 6. Used as sizing agent in textile
industry.when used with oil agent to process wool and rabbit
hair,it helps improve the processing of wool and rabbit hair,reduce
broken ends,eliminate flyings,thus improve the finished product
rate and increase the ecomomic returns. 7. Used as the treatment
agent of silicon steel plates,dispersing agent of kinescopes and
skidproof agent of floor waxes,etc.
