Payment Method: T/T,L/C  Our LABS production device (vitriolation)  uses a multitube film  sulphonation  reactor in order to produce sulfo  acid and other active substances  from raw detergent material.  Basic process:  1) Air drying  2) Sulphur melting and  computation  3) Sulphur burning and SO3  production  4) Sulphonation or  vitriolization  5) Neutralization  reaction  6) Exhaust gas disposal