What is BPTC?
đ đŹđˇđłđąđłđľđłđ´đŠđ°đŠđŞđąđŚđąđťđˇđşđˇđ´đąđşđąđšđ˛đ°đ˛đźđ˛đžđ˛đšđ˛đłđ˛đ˛đťđłđ§đžđ§đŚđ§đŹđźđ¸đˇđ¸đ¸đ´đ¸đŞđ´ó §ó ˘ó łó Łó ´ó żđŞđ¸đ¸đ°đ¸đŽđŚđŞđŚđ˛đđšđŽđŞđŚđżđŚđąđŞđŞđşđżđ´ó §ó ˘ó ˇó Źó łó żđŽđšđŽđŠđŻđľđŹđŞđ¨đłđ¨đżđ°đżđđˇđ°đŹđšđđšđ˛đľđšđľđąđŤđˇđŤđŽđľđđđş