Shenzhen Allperson Investments Ltd is a comprehensive entity that has newly invested a project synthetizing “Green”building material protectors. Our experts in the field of nano－tech chemicals have invented a new stone protection technique in the form of our MAN MULON ST-302 and ST-600 products that can help any kind of stone products free from environmental contamination, rust,oil,water and etc. the products have been greatly recognized both in Hong Kong and Shanghai EXPO city－revamp projects.