Unitek, the subsidiary of Taiwan Tong Group, has completely introduced the technology of stainless steel heat treatment and surface treatment from Japan since 2002, being the first manufacturer in China to produce the high-strength and high quality martensitic stainless steel fasteners. Therefore the situation of only relying on imports of such products for long was broken. We are specialized in stainless steel screws according to DIN, ASIN, JIS, ISO and other non-standard. Our products include self-drilling screws and self-tapping screws, sems machine screws, drywall screws, chipboard screws, wood screws and some special screws. Unitek, your reliable partner.