
The selection of hollows is also copper. It is also divided into hollow tubes and solid copper rods, and it advocates the purchase of hollow tubes. After all, it is only used to hang towels, and the solid poles are not practical and expensive.
Select copper from raw materials, metal pendants are copper, stainless steel, aluminum, alloys, plastics and other kinds. Advocate that we purchase copper accessories. The reason is simple: aluminum will oxidize, alloys will rust, plastics will distort, and stainless steel is really difficult to stainless, but stainless steel of questionable quality cannot ensure that it does not rust. Copper will not have these doubts after outstanding electroplating. Especially the base, moistureproof and waterproof is still good for copper.
The hardest part in selecting a pendant for lubrication is looking at the coating, since the rough look is basically the same for the average consumer. Coating disposal is crucial for copper pendants. It relates to the service life, finish, and abrasion resistance of the product. A coating disposal is also the biggest cost place in addition to copper embryos in the copper pendant manufacturing process. Detailed electroplating technology will not say more.
How to determine the quality of a copper coating? A good coating of black shiny hair, there is a sense of moisture, while the residual coating is dim and dark. The good coating is very flat, and when you look at the deteriorating coating carefully, you will find that the appearance has a wave-like ruggedness. The appearance of depression is definitely a defective product. A good coating is more wear-resistant. Samples placed by the merchants in the store are scrubbed every day. There are no visible scratches on the appearance of good products, and there will be scratches on the appearance of inferior goods.
Ultramarine Blue pigment is the most common blue inorganic pigment. It is compound with sulfur of aluminum silicate, having vivid lustre and pure colour.
Ultramarine blue with Excellent Thermostability; Excellent Light Fastness; Ultramarine blue is Untransferable; Easy to Scatter and Safe and Poisonless
type: Ultramarine blue pigment
Delivery Form:Powder
Color Index:Pigment Blue29: 77007
CAS No. :57455-37-5
Molecular weight:862.60578
Scope of Application:
*Tinting: Applied to Paint, Ink, Spray, Rubber, Plastic, Arts pigment, Cosmetics, etc. and MAINLY APPLIED TO INDUSTRIES OF ARCHITECTURAL COATING, PLASTIC, RUBBER, PAINT AND SO ON
*Whitening: Ultramarine blue pigment can remove yellow colour contained in white materials.
*Mix colours: Ultramarine blue pigment can make black or grey have soft lustre.
Technical data sheet
Technical Data
Min Max Test Method
Water-Soluble Content [%] 0.5 DIN EN ISO 787 Part 3 (1995)
Sieve Residue (0.045mm) [%] 0.1 DIN 53195 (1990)
PH Value 7.0 10 DIN EN ISO 787 Part 9 (1995)
Free Sulfur [%] 0.05 DIN 55913 (1972)
105°C Moisture (After Prod.) [%] 1.0 DIN EN ISO 787 Part 2 (1995)
Oil Absorption [g/100g] 30.0 40.0 DIN EN ISO 787 Part 5 (1995)
Thermo Stability 300°C 350°C Manufacturer standard
Lead content 30ppm EN71 Part3:1994+A1:2000/AC:2002,ICP-OES
Other heavy metals(Cr,Cd,Hg,As) N.D EN71 Part3:1994+A1:2000/AC:2002,ICP-OES
Specific gravity 2.35 2.35 GB21782-2008
Acid fastness 1 degree(poor)
Alkali fastness 2 3 degree (good)
Average Particle size(µm) 1.7 1.9
Light fastness 7 8 degree

Ultramarine Blue
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