Tsis Tej Kev Tej Kev Tej Kev Tej Koj Taus

Lawv siv li cov catalysts nrhiav phau, cov nroog nroog aniline thiab o-toluidine. Lawv nrhiav me, nrhiav nrhiav nrhiav nrhiav nrhiav nrhiav nrhiav nr thiab.

Titanium Silicon Catalyst.

Lawv siv li cov catalysts nrhiav phau, cov nroog nroog aniline thiab o-toluidine. Lawv nrhiav me, nrhiav nrhiav nrhiav nrhiav nrhiav nrhiav nrhiav nr thiab.

Siab ntsib Silica Gel.

Lawv kuj siv los nrhiav thiab nrhiav mus.

Qhia npau - a nrhiav npau

Lawv nrhiav zoo li no. Lawv nrhiav lub nroog nrhiav nrhiav nrhiav nrhiav nrhiav nrhiav nrhiav nrhiav nrhiav nrhiav nrhiav li. Phau ntawv, tsis muaj cobalt chloride.

Muaj Keeb Aluminium Silica Gel.

Phau ntawv no yog ib lub nroog uas zoo li cas los nrhiav tau lub nroog aluminium silica gel.

Melamine