I had a negative encounter with LuKaiSen despite being an expert DIYer. They claim to offer high-quality screws and fasteners, but I discovered their products to be of inferior quality. The industrial fasteners I bought were subpar, and the self-tapping screws I bought stripped readily. Furthermore, when I attempted to voice my concerns, their customer support was dismissive and unhelpful. Avoid the trouble and purchase your fasteners elsewhere. DIY, subpar goods, and subpar customer service