Model Cff Euro-Top Mattress Sewing Machine
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Available fabric width: | 160~300mm |
Sewing speed      | 10m/min |
Material thickness: | 15mm    |
Power: | 400WÂ |
Rated air pressure: | 0.6-0.8Mpa |
Machine dimension: | 3800x1200x1600mm |
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 Our Services:
1. After-sale service:
  Installation & Commissioning: The seller can provide the installation, commissioning and training
   service in buyer's factory, while the buyer needs to pay for VISA application, air ticket, accommodation,
  (if necessary) interpreting fee for seller's technician.
2. Warranty:For the machine above,the seller provides one year warranty starting from the moment
the seller dispatches the machines. For the detailed guarantee period of each part, please refer to the operation manual.Wearing parts,consumption material and the damage incurred by the buyer's incorrect operation are out of warranty range.
FAQ:
Voltage: Please pay attention to your country's voltage,
China is 220v 1phase 50Hz / 380v 3phase 60Hz. If different, please inform us in advance.
Our company:Â
Nanjing Square Mattress Machinery Co., Ltd. (also named Nanjing Sifang MattressÂ
Machinery Factory) was established in 1990. We are a specialized manufacturer ofÂ
complete line mattress & sofa spring equipment. Our present products cover 10 seriesÂ
and more than 60 models. Our present factory covers an area of 35,000sqm with aÂ
14,000-square-meter workshop.
Presently, our company is running strictly in terms of ISO90001:2000 quality system. OurÂ
products sell well not only in China but also far in Europe, South America, North America,
 Australia, the Middle East, Asia, Africa, and other countries and regions all over the world. Our products make us win customers' trust and recognition widely. Our annual exportÂ
volume is increasing rapidly. Any of your contacts or visits is sincerely welcomed. We lookÂ
forward to making cooperation with you in the near future!  Â
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Chromium(III) sulfate usually refers to the inorganic compounds with the formula Cr2(SO4)3.x(H2O), where x can range from 0 to 18. Additionally, ill-defined but commercially important "basic chromium sulfates" are known. These salts are usually either violet or green solids that are soluble in water. It is commonly used in tanning leather.
Since 33% of the anion charges are due to hydroxy ions the basicity is 33% (but in tanning jargon it is known as 33% reduced). Products with higher basicities, e.g. 42% or 50% may be obtained by the addition of sodium carbonate, these are often used in combination with Sodium Formate. The sodium sulfate is often left in the technical product since it is inert with respect to the tanning process. It is important to fully reduce the hexavalent chromium to trivalent since the hexavalent is more likely to cause health problems for tanners and leather consumers.
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