... 2,high quality; 3,low price made in china; 4,perfect technology; 5,good after sale service. methyl hydrogen ... 57-2Size: TH-202 Main Technical ParametersItemIndexValue of hydrogen (%)1.60Viscosity (25°C,mm2/s)25~30Refractive ... can be used in making into methyl hydrogen silicone oil withhydrogen content below 1.00 ... ceramics, paper, leather, cement, marble,etc.2.It can keep air permeability and enhance the ...