求助！哪位大侠有G623海沧白的技术参数？
在加拿大 如题. I would appreciate if you can also send the certificate of the stone properties, so we can submit along with our structural calculations. 哪位大侠有？ 评论 看不懂 评论 一种花岗岩石材...华人论坛
在加拿大 如题. I would appreciate if you can also send the certificate of the stone properties, so we can submit along with our structural calculations. 哪位大侠有？ 评论 看不懂 评论 一种花岗岩石材...华人论坛