Are Mastery and Chen Guang made by the same family?

Mastery and Chenguang are not made by the same family.

1. Chen Guang Stationery was established in 2008 and belongs to Shanghai Chen Guang Stationery Co., Ltd., a famous stationery manufacturer in China. Although it was established late, its reputation has always been good.

2.Mastering, which belongs to Wenzhou Jinma Stationery Manufacturing Co., Ltd., a well-known children's painting brand in China, is committed to producing healthy, safe and environmentally-friendly painting products for consumers, including crayons, coloring picture books, oil pastels and colored mud.