Products

Jar Hing is a professional manufacturer with more than 16 years of experience, offering high purity mullite sand for investment casting and matched mullite flour for ceramic shell making. Low thermal expansion & high refractoriness are ideal substitutes for zircon sand for stainless steel precision casting.

High purity Mullite Sand for investment casting, matched mullite flour for shell stucco. Low iron, great thermal shock resistance, ideal refractory for precision alloy casting with full mesh customization.

Our calcined Mullite Sand serves as core refractory material for investment casting shell making. Uniform grain distribution and excellent shakeout performance reduce casting defects; cooperate with mullite powder to produce smooth, high-precision metal castings for automotive & machinery industries.

Premium Mullite Sand for Investment Casting, paired with matching mullite flour to build stable casting shell molds. Featuring low thermal expansion and high refractoriness, this aluminosilicate refractory delivers precise dimension control for stainless steel & alloy precision casting, with customizable mesh sizes available for your foundry production.

Colloidal Silica for Investment Casting serves as core inorganic binder for ceramic shell making, widely adopted in aerospace, medical and auto precision lost-wax casting. Backed by independent nano silica R&D, we control particle size distribution to boost shell high-temperature strength and reduce casting defects. Our automated production line delivers annual output of 80,000 tons, with stable bulk stock for fast delivery. We maintain long-term cooperation with over 120 foundries across Europe, Southeast Asia and North America, ranking top sales among domestic casting-grade silica sol suppliers with consistent stable quality.

Cast steel balls are wear-resistant grinding media manufactured via high-temperature metal mold casting and professional tempering heat treatment. We supply full series including low chrome, medium chrome and high chrome cast steel balls with diameter ranging from 10mm to 150mm. The product features uniform internal hardness, ultra-low breakage rate, outstanding abrasion resistance and stable roundness without deformation during long-term grinding. High chrome cast steel balls reach HRC 56–62 hardness, medium chrome HRC 47–55 and low chrome HRC 45–52, perfectly matching dry and semi-dry ball mill working conditions. Widely applied in cement plants, mineral processing mines, thermal power stations and chemical grinding workshops. As a direct Chinese manufacturer, we support bulk tonnage supply, customized chrome content & sizes, and provide complete ISO certification and material test reports to global industrial buyers with competitive factory prices.