oh ya111 wrote:我彎90度時內側都會...(恕刪)
MING510 wrote:你如噴燈烘烤技術不好..你不會買個90度彎頭..兩邊水管接起來喔......(恕刪)
oh ya111 wrote:我彎90度時內側都會凹掉,請問這是什麼原