CH? N?I

L cc ch? ???c c?t v gia cng n?i d?ng hnh kh?i h?p, c th? k?t h?p ?i ?n bn trong ho?c khng. Th??ng ???c g?n ln b? m?t cc m?t d?ng qu?ng co nh? alu, mica, tole. S? k?t h?p gi?a ch? n?i v m?t d?ng ph?ng t?o nn m?t b?ng hi?u hon h?o cho m?i th??ng hi?u hi?n nay