Zhejiang Yongsheng Technology Co., Ltd. is a core subsidiary of Rongsheng Petrochemical, a national high-tech enterprise focusing on R&D, manufacturing and marketing of BOPET film, film-grade PET chips and functional masterbatch. It is globally recognized as the first enterprise to realize melt direct production of BOPET film. Equipped with advanced German production lines for film stretching and slitting, Yongsheng Technology supplies diversified BOPET products, including packaging film, optical base film, cable insulation film, photovoltaic backsheet base film, transfer and metallized base film. Benefiting from Rongsheng’s integrated petrochemical chain, the company achieves stable supply of high-quality PET raw materials and strict quality control throughout production. Its films serve food packaging, new energy, electronics, printing and lamination industries, with reliable performance and customized grades for global clients.