... 3,low price made in china; 4,perfect technology; 5,good after sale service. methyl hydrogen silicon ... -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%, ... of metal salt, cross-linked film in low temperature,formed waterproof membrane on all kinds ...