Huanghe Whirlwind said its wholly owned unit Lianyi Diamond (Henan) Co. issued a
price-adjustment notice raising prices for large single-crystal products
(lab-grown diamond blanks) by 10% effective Nov. 1, 2026. The company cited
sharply higher operating costs and sustained CNY appreciation as drivers. The
increase applies only to the subsidiary’s large single-crystal products; other
product lines were not raised. This is the second price increase this year,
after a March adjustment.
