Hello Sir if you have the chemist in china now, please contact with me. because I need the professional technican to work with me. but I only work on the percentage. it means I can not pay any fee before cleaning. because there are so many fake chemist for this buisness on the market, they only want to scam the fee from the customers. they never have any chemical in their hands, so I only work like this if you accept my working condition, please contact with me thanks Show More