If they consider Taiwan as their state then why do they boil when US gives arm and consider them as a separate nation. Same logic applies for Tibet as well that France and other countries consider it separate nation ( I am not including India as India has already considered Tibet as part of PRC)..
no, they all officially recognized Tibet as part of PRC. Otherwise PRC wouldn't establish diplomatic relationship with them, as simple as that.
there is a reason why only US can sell arms to Taiwan in this world. as why China did nothing but only protest over the US arms sales to Taiwan, the only reason I think it's US is still too strong for China to challenge it. However, US also knows it cannot push it too hard--there has to be a balance/or a red line US cannot across. With China getting stronger day by day I see US is losing its edge rapidly.