PuYang YongAn Chemical Co., Ltd (YACC)is a born high-tech enterprise which specialize in producing Pentaerythritol(PE) and Calcium Formate. YACC believing in "specialization leads to excellence, devotion leads to predomination". The top specialist gathered in the company, and they developed the new technique which produce PE and the byproduct Dipentaerythritol(Di-PE) and Calcium Formate, and the technique is the exclusive one in China. Because we have adopted the new technology, the producing cost of PE and Calcium Formate has been reduced greatly, and at the same time improve the quality of the PE and Calcium Formate. The content of PE has been increased from 90% to 95% compared with the traditional method. Accordingly the hydroxy content has been increased from less then 47% to more than 48%, and the appearance.