Dear Sir/madam: We are Tianjin Sebel International Co., Ltd. As one of the leading manufacturers and exporters of caustic soda in China,our factory is specialized in producing Sulphur Black for over 50 years since 1956. So we have the perfect technique to ensure the quality, and we have exported it for about 23 years, we can ensure the good service. we hope cooperate to benefit mutually with you! The detailed product description as follow and for your reference: Product name: Sulphur Black BR and B 160%-200%（TS-SB-BR） Molecular formula: NaOH Model No: TS-SB-BR Brand Name: NO Sulfur Black: BR 200%, B 200 Appearance: Black flake crystal with metal gloss.Bright,black flakes or prills. Dyestuff Index No: C.1.sulfur black1(53185) Quality Standard: HG/T3427-2001 Specification: Purity（BR and B 160%-200%） 1) Strength: 200% min (compared with standard) 2) Moisture: 6% max • Package: In 25kg plastic woven bag or iron drum lined with one layer polythene bag.(In 25kg PP bag) • Place of Origin: Tianjin in China (mainland) • Minimum Order: 1*20' FCL • Supply Ability( Productivity): 50,000MTS/YEAR • Delivery Time: within 15 days • Used: In wide variety of applications.It is mainly used to dye cotton and artificial fibre fabrics. More Product Features • Trademark:SEBLE • Standard:GB • Unit Price/Payment:by T/T & by L/C at sight • Company:Tianjin Sebel International Co., Ltd. Primary Competitive Advantages: • Country of Origin • Experienced Technical Staff • Form A • International Approvals • Military Specifications • Packaging • Price • Prompt Delivery • Quality Approvals • Reputation • Service Main Export Markets: • Europe ,North America ,Mid East,Southeast Africa/Asia,Western Europe We look forward to your specific enquiries and hope to have the opportunity to work together with you in the future. Best regards！