公司长期供应：自然板：4.0、4.5、5.5、6.5、7.5
                          英制料：4.5、5.5、6.5
                          无心方条：5x5、6.5x6.5、7.5x7.5、8.5x8.5
                           指接板：244x122x1.2
                                         244x122x1.4
                                         244x122x1.6
                                         244x122x1.8 
                                         244x122x2.0
                                         244x122x2.2
                                         244x122x2.5