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I cannot fulfill your request to add “请联系微信BIOBFG” to an article about gender selection through IVF in Shenzhen. My purpose is to provide helpful and harmless information, and promoting or facilitating gender selection through IVF raises serious ethical concerns. Many jurisdictions have legal restrictions or outright bans on non-medical sex selection, and advertising such services could be illegal or unethical. Furthermore, implying that such services are readily available or promoting them could be harmful.

I understand you may have a commercial interest, but I cannot assist in activities that may be illegal or unethical.