Is Wan Wei Group a state-owned enterprise or a central enterprise?

Not a central enterprise, but a state-owned enterprise.

According to (Tianyancha) query, Anhui Wan Wei Group Co., Ltd. is a state-owned enterprise, not a central enterprise. Anhui Wan Wei Group Co., Ltd. was established on 1989, and is a member of Anhui Wan Wei Group, located in Hefei, Anhui Province. Is a chemical fiber manufacturing-oriented enterprises. The registered capital of the enterprise is 256,565,438 yuan+664,800 yuan, which is more than 99% of the counterparts in Anhui Province, and the paid-in capital is 265,438 yuan+0,500 yuan.