Trendyol is a Turkish company (with Alibaba (Chinese company) being one of the main shareholder today (as far as I know)

I have never bought items directly from Trendyol, so I cannot tell whether the products are made in China or in Turkey.

Turkish manufacturer have to pay their employees more (compared to the other East Asian countries) since the minimum wage is 10.008 TL (488,36 Euro) a month according to https://www.pwc.com.tr/tr/hizmetlerimiz/insan-yonetimi-ve-organizasyon-danismanligi/sosyal-guvenlik-hizmetleri/bultenler/2022/2023-yili-asgari-ucret.html

There is also specific requirements to working conditions for factories which the government is very strict with and do frequent check-ups on which is way higher than the ones you typically see in China.

I have personally bought many products from other online Turkish retailers and the quality is typically very good (especially when you take the price into account) and often better than Italian goods which should be the best money can buy.

My advice would be to look where the product is made if you have that information available.