Calcium Carbide, Activated Carbon, Caustic Soda manufacturer / supplier in China, offering Grey Multi-Color Calcium Carbide Un No: 1402 with SGS/ISO Certification, SGS/ISO Certified Grey Multi-Color Calcium Carbide Un No: 1402 for Industrial Use, Reliable Grey Multi-Color Calcium Carbide Un No: 1402 SGS/ISO Certified Quality and so on.