Unable to determine. You need to check the security code after receiving the goods. Pechoin Anhui shipments all have anti-counterfeiting codes. Scratch off the coating on the label surface to get the authentic product query code, and then check it by phone or through the website. "Pechoin" is a brand of Shanghai Pechoin Daily Chemical Co., Ltd. (English abbreviation: SPDC). Pechoin was founded in 1931. It has a long history and glorious achievements, and has achieved Pechoin's reputation for quality as gold. The brand has been selected as "Shanghai Famous Trademark" many times and won titles such as "China's Well-known Trademark".