This is Vicky from China Huiying Chemical Industry about 4A Zeolite manufacturer. We are one of largest and professional manufacturer in China. 4A Zeolite can replace STPP for Non-Phosphate detergent powder production. We supply to P&G Asia/ Japan Kao since 1996. Henkel, Colgate, Lion, Reckitt Benckiser and export to many famous detergent powder company in worldwide.