Zolemba zochapira zimapangidwa ndi zida zokhazikika komanso zosavuta za PPS. Zinthuzi ndi pulasitiki yolimba kwambiri ya crystalline resin engineering yokhala ndi dongosolo lokhazikika. Ili ndi ubwino wa kukana kutentha kwakukulu, ntchito yabwino yotchinjiriza, kukana mankhwala, kusakhala ndi poizoni, reta yamoto ...
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